Determination of phenols by solid-phase microextraction

被引：117

作者：

Bartak, P

Cap, L

机构：

[1] Department of Analytical Chemistry, Palacký University, 77 146 Olomouc

来源：

JOURNAL OF CHROMATOGRAPHY A | 1997年 / 767卷 / 1-2期

关键词：

extraction methods; water analysis; phenols; nitrophenols; chlorophenols;

D O I：

10.1016/S0021-9673(96)01090-4

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Solid-phase microextraction was investigated for the determination of phenols. Analytes were extracted by a thin layer of suitable sorbent coated on a fine fused-silica fiber. The fiber was then transferred into the injection port of a gas chromatograph, analytes were thermally desorbed and analyzed by gas chromatography. The best results were obtained with a polyacrylate coating by indirectly sampling in the head space above the liquid sample. The extraction period was 60 min, the desorption time was 8 min at 250 degrees C. Acidification by hydrochloric acid (pH similar to 1) and salting out (saturation by sodium chloride) were necessary for the best recovery.

引用

页码：171 / 175

页数：5

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