فهرست:
چکیده ......................................................................................................................................................................... ل
فصل اول : گونه شناسی جیوه و کاربرد آن در صنعت و ایجاد بیماری............................................ 1
1-1-تعریف گونه شناسی................................................................................................................................................ 2
1-1-2- تعریف گونه شناسی عنصری و جز به جز کردن ................................................................................................. 3
1-2- مشکلاتی که بر سر راه گونه شناسی وجود دارد.................................................................................................... 4
1-3- استراتژی گونه شناسی............................................................................................................................................ 5
1-4- جیوه و اهمیت اندازه گیری آن ................................................................................................................................... 6
1-5- تاریخچه جیوه........................................................................................................................................................... 7
1-6- خواص جیوه............................................................................................................................................................... 7
1-6-1- خواص ترکیبات جیوه............................................................................................................................................. 8
1-7- گسترش کاربردهای جیوه......................................................................................................................................... 10
1-7-1- پراکندگی جیوه در محیط زیست......................................................................................................................... 10
1-8- بیماری های ناشی از قرار گیری در معرض جیوه........................................................................................................ 11
1-9- تاثیر جیوه بر سلامتی................................................................................................................................................ 12
1-10- جیوه در مواد غذایی................................................................................................................................................. 13
1-11- اثر جیوه بر حیوانات................................................................................................................................................. 14
1-12- اثرات فیزیولوژیکی جیوه.......................................................................................................................................... 15
1-13- موارد کاربرد صنعتی و غیر صنعتی جیوه............................................................................................................... 16
1-14- آماده سازی جیوه (مراحل گونه شناسی جیوه)...................................................................................................... 17
1-14-1- جدا سازی ترکیبات جیوه (مراجل گونه شناسی جیوه)..................................................................................... 17
1-14-1-1- نمونه های خاک و رسوب.................................................................................................................................. 18
1-14-1-2- نمونه های بیولوژیکی....................................................................................................................................... 19
1-15- مشکلات اصلی در گونه شناسی جیوه................................................................................................................. 19
1-16- مروری بر تحقیقات گذشته در زمینه گونه شناسی جیوه...................................................................................... 20
فصل دوم :ریز استخراج فاز جامد با استفاده از جاذب پلیمری قالب مولکولی ............................ 22
مقدمه ............................................................................................................................................................................. 23
2-1 استخراج .................................................................................................................................................................. 23
2-1-1 خصوصیات حلال ................................................................................................................................................. 24
2-2 استخراج با حلال ..................................................................................................................................................... 25
2-3 استخراج با فاز جامد(SPE) ................................................................................................................................... 25
2-4 ریز استخراج با فاز جامد(SPME) ......................................................................................................................... 26
2-4-1 مزایای میکرو استخراج با فاز جامد ...................................................................................................................... 27
2-4-2 پارامترهای بهینه سازی کردن میکرو استخراج با فاز جامد .............................................................................. 28
2-4-3 عوامل موثر بر مقدار ماده ی جذب شده ............................................................................................................. 29
2-4-4 انواع روش های نمونه برداری ................................................................................................................................. 29
2-4-5 انتخاب روش استخراج ........................................................................................................................................ 30
2-4-6 معایب میکرو استخراج با فاز جامد ................................................................................................................... 30
2-4-7 انواع فایبرها ........................................................................................................................................................ 30
2-4-8 انواع روش های هم زدن در میکرو استخراج با فاز جامد ..................................................................................... 32
2-4-9 عوامل موثر بر میکرو استخراج با فاز جامد ...................................................................................................... 33
2-4-10 کاربردهای میکرو استخراج با فاز جامد .......................................................................................................... 33
2-5 سرنگ SPME ..................................................................................................................................................... 34
2-6 مروری بر تحقیقات گذشته SPME ...................................................................................................................... 35
2-7 انواع فازهای جامد ................................................................................................................................................... 38
2-7-1 کربن(گرافیت) ...................................................................................................................................................... 38
2-7-2 سیلیکاژل ............................................................................................................................................................ 38
2-7-3 جاذب پلیمری ....................................................................................................................................................... 39
2-8 آشنایی با پلیمر و پایمریزاسیون ........................................................................................................................... 39
2-8-1 پلیمر چیست؟ ..................................................................................................................................................... 39
2-8-2 انواع پلیمر ساختاری ........................................................................................................................................... 39
2-8-3 بسپارها از نظر اثر پذیری در برابر حرارت به دو دسته تقسیم می شوند ............................................................ 40
2-8-4 انواع پلیمرها بر اساس منبع تهیه ..................................................................................................................... 40
2-8-5 انواع روش های پلیمریزاسیون ............................................................................................................................. 40
2-8-5-1 پلیمریزاسیون افزایشی ................................................................................................................................... 40
2-8-5-2 پلیمریزاسیون تراکمی .................................................................................................................................... 41
2-9 پلیمرهای قالب مولکولی ........................................................................................................................................ 41
2-9-1 مزایای پلیمرهای قالب مولکولی ........................................................................................................................... 42
2-9-2 عوامل سازنده یک پلیمر قالب مولکولی ........................................................................................................... 42
2-9-2-1 مونومر عاملی ................................................................................................................................................. 44
2-9-2-2 مولکول هدف(قالب) ........................................................................................................................................ 46
2-9-2-3 عامل اتصال عرضی ........................................................................................................................................ 46
2-9-2-4 حلال ................................................................................................................................................................ 47
2-9-2-5 آغازگر ............................................................................................................................................................. 48
2-9-3 انواع پلیمرهای قالب مولکولی .......................................................................................................................... 49
2-10 پلیمر قالب مولکولی کووالانسی ......................................................................................................................... 50
2-10-1 مزایای پلیمرهای قالب مولکولی کووالانسی .................................................................................................... 50
2-10-2 معایب پلیمرهای قالب مولکولی کووالانسی ................................................................................................. 50
2-11 پلیمرهای قالب مولکولی نیمه کووالانسی ........................................................................................................ 51
2-12 پلیمرهای قالب مولکولی غیر کووالانسی ......................................................................................................... 51
2-12-1 مراحل سنتز پلیمر قالب مولکولی ................................................................................................................ 51
2-12-2 دلایلی که از روش غیر کووالانسی بیشتر استفاده می شود .......................................................................... 51
2-13 روش های تهیه پلیمر قالب مولکولی ................................................................................................................... 52
2-13-1 پلیمریزاسیون توده ای ....................................................................................................................................... 52
2-13-2 روش پلیمریزاسیون رسوبی ............................................................................................................................. 52
2-13-3 پلیمریزاسیون با تورم چند مرحله ای ............................................................................................................... 53
2-13-4 پلیمریزاسیون سوسپانسیون .......................................................................................................................... 53
2-13-5 روش پیوند زنی ................................................................................................................................................... 53
2-14 کاربرد پلیمرهای قالب مولکولی .......................................................................................................................... 53
2-14-1 کاربرد پلیمرهای قالب مولکولی برای ریز استخراج با فاز جامد (SPME) .................................................... 54
2-15-1 کاربرد پلیمرهای قالب مولکولی در حسگرها ................................................................................................. 54
2-15-2 کاربرد پلیمرهای قالب مولکولی در غشاء ........................................................................................................ 54
2-15-3 کاربرد پلیمرهای قالب مولکولی در کاتالیزگرها .............................................................................................. 55
2-15-4 کاربرد پلیمرهای قالب مولکولی در کروماتوگرافی .......................................................................................... 55
فصل سوم : مطالعات تجربی .............................................................................................. 57
3-1 مواد مصرفی ........................................................................................................................................................... 58
3-2 دستگاه وری ............................................................................................................................................................. 58
3-2-1 التراسونیک ........................................................................................................................................................ 58
3-2-2 pH متر .............................................................................................................................................................. 58
3-2-3 بن ماری ............................................................................................................................................................... 58
3-2-4 کروماتوگرافی گازی GC .................................................................................................................................. 58
3-2-5 آون ....................................................................................................................................................................... 59
3-2-6 همزن مغناطیسی(هیتر) ................................................................................................................................... 59
3-2-7 سرنگ SPME .................................................................................................................................................. 59
3-2-8 دستگاه (IR) .................................................................................................................................................... 60
3-3 تهیه پلیمر قالب مولکولی 55................................................................................................................................. 60
3-3-1 انتخاب عوامل ...................................................................................................................................................... 60
3-3-1-1 آنالیت یا نمونه ................................................................................................................................................. 60
3-3-1-2 مونومر عاملی مناسب .................................................................................................................................. 60
3-3-1-3 عامل اتصال دهنده عرضی ............................................................................................................................. 61
3-3-1-4 حلال مناسب ................................................................................................................................................... 61
3-3-1-5 آغازگر ............................................................................................................................................................ 62
3-3-2 روش سنتز پلیمر قالب مولکولی ......................................................................................................................... 62
3-4 بهینه سازی شرایط جذب فتیل جیوه کلراید در روش ریز استخراج با پلیمر قالب مولکولی ................................ 63
3-4-1 تعیین ماکزیمم طول موج جذب ......................................................................................................................... 63
3-4-2 بررسی اثر نمک ..................................................................................................................................................... 64
3-4-3 بررسی اثر زمان ................................................................................................................................................... 64
3-4-4 تاثیر pH محلول بر جذب پلیمر ........................................................................................................................ 65
3-4-5 شناسایی فنیل جیوه کلراید توسط دستگاه GC ............................................................................................ 66
3-4-5-1 برنامه دمایی دستگاه GC برای فتالات ها .................................................................................................... 66
فصل چهارم : بحث و نتیجه گیری ....................................................................................... 67
4-1 سنتز پلیمر قالب مولکولی و پلیمر شاهد ........................................................................................................... 68
4-1-1 پلیمریزاسیون پلیمر قالب مولکولی ................................................................................................................. 68
4-1-2 مکانیسم سنتز پلیمر قالب مولکولی .............................................................................................................. 70
4-1-3 طیف های FT-IR از پلیمر MIP و NIP ........................................................................................................... 71
4-2 بهینه سازی شرایط جذب فنیل جیوه کلراید توسط پلیمر قالب مولکولی ........................................................ 72
4-2-1 اثر نمک بر جذب فنیل جیوه کلراید.......................................................................................................................... 72
4-2-2 اثر زمان بر جذب فنیل جیوه کلراید......................................................................................................................... 73
4-2-3 اثر pH محلول بر جذب پلیمر .............................................................................................................................. 74
4-2-4 شناسایی فنیل جیوه کلراید توسط دستگاه GC ............................................................................................ 75
خلاصه ............................................................................................................................................................................. 77
پیوست............................................................................................................................................................................... 78
پیوست 1؛ طیف FT-IR از NIP، در محدوده 400-4000 cm-1 به روش قرص KBr ................................................ 78
پیوست 2؛ طیف FT-IR از MIP، در محدوده 400-4000 cm-1 به روش قرص KBr .............................................. 79
پیوست 3؛ طیف GC برای محلول 10 PPM فنیل جیوه کلراید.................................................................................... 80
پیوست 4؛ طیف GC برای محلول 40 PPM فنیل جیوه کلراید.................................................................................... 81
پیوست 5؛ طیف GC برای محلول 100 PPM فنیل جیوه کلراید.................................................................................. 81
پیوست 6؛تصویر TEM از NIP،......................................................................................................................................84
پیوست7؛تصویر TEMاز MIP،....................................................................................................................................85
منابع .................................................................................................................................................................................. 86
چکیده انگلیسی .......................................................................................................................................................... 91
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