کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1167469 1491146 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization and validation of liquid–liquid extraction with low temperature partitioning for determination of carbamates in water
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Optimization and validation of liquid–liquid extraction with low temperature partitioning for determination of carbamates in water
چکیده انگلیسی

Using a 23 experimental design, liquid–liquid extraction with low temperature partitioning (LLE-LTP) was optimized and validated for analysis of three carbamates (aldicarb, carbofuran and carbaryl) in water samples. In this method, 2.0 mL of sample is placed in contact with 4.0 mL of acetonitrile. After agitation, the sample is placed in a freezer for 3 h for phase separation. The organic extract is analyzed by high performance liquid chromatography with ultraviolet detection (HPLC-UV). For validation of the technique, the following figures of merit were evaluated: accuracy, precision, detection and quantification limits, linearity, sensibility and selectivity. Extraction recovery percentages of the carbamates aldicarb, carbofuran and carbaryl were 90%, 95% and 96%, respectively. Even though extremely low volumes of sample and solvent were used, the extraction method was selective and the detection and quantification limits were between 5.0 and 10.0 μg L−1, and 17.0 and 33.0 μg L−1, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 671, Issues 1–2, 25 June 2010, Pages 41–47
نویسندگان
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