The Comparison of Silica Gel-Alumina Sorbents for Separation of PAHs and PCBs
نویسندگان
چکیده مقاله:
The aim of this research is to develop a silica gel and alumina column chromatography for separation of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) into two groups. This is achieved by optimizing the cut-off volume of eluting solvent and weight ratio of silica gel and alumina. In this process mixture of PAHs and PCBs divide in two groups and simultaneously other interferences like lipids and aliphatic compounds are removed. So the sample is prepared to be analyzed and quantified by HPLC. The main purpose of the research was to find a combination of sorbents for the column chromatography method that would permit the determination of many types of pollutants (PAHs, PCBs and aliphatic compounds) in a single run. Elution profiles for both the analytes and the interfering components were determined for several types of column chromatography sorbents (alumina, silica) and combination of them.The silica: alumina (5:5 g) column is suitable for the separation of PCBs and silica: alumina (5:10 g) is preferred for the separation of PAHs. The efficiency of the developed clean- up method was evaluated using real sediment sample.
منابع مشابه
the comparison of silica gel-alumina sorbents for separation of pahs and pcbs
the aim of this research is to develop a silica gel and alumina column chromatography for separation of polycyclic aromatic hydrocarbons (pahs) and polychlorinated biphenyls (pcbs) into two groups. this is achieved by optimizing the cut-off volume of eluting solvent and weight ratio of silica gel and alumina. in this process mixture of pahs and pcbs divide in two groups and simultaneously other...
متن کاملthe evaluation and comparison of two esp textbooks available on the iranian market for teaching english to the students of medicine
abstract this study evaluated and compared medical terminology and english for the students of medicine (ii) as two representatives of the textbooks available on the iranian market for teaching english to the students of medicine. this research was performed on the basis of a teacher’s and a number of students’ attitudes and the students’ needs analysis for two reasons: first, to investigate...
15 صفحه اولcomparison of zoe and vitapex for canal treatment of necrotic primary teeth
چکیده ندارد.
15 صفحه اولon the comparison of keyword and semantic-context methods of learning new vocabulary meaning
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
15 صفحه اولcomparison of the amount of debris extruded apically in two rotary techniques: flexmaster and m2
چکیده ندارد.
15 صفحه اولthe innovation of a statistical model to estimate dependable rainfall (dr) and develop it for determination and classification of drought and wet years of iran
آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 26 شماره 2
صفحات 27- 33
تاریخ انتشار 2007-06-01
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023