4.7 Article

Simultaneous determination of carbazole-based explosives in environmental waters by dispersive liquid-liquid microextraction coupled to HPLC with UV-Vis detection

期刊

MICROCHIMICA ACTA
卷 177, 期 1-2, 页码 145-152

出版社

SPRINGER WIEN
DOI: 10.1007/s00604-012-0762-0

关键词

Dispersive liquid-liquid microextraction; High performance liquid chromatography/UV-Vis; Carbazole; Tri nitro carbazole; Tetra nitro carbazole; Water samples

向作者/读者索取更多资源

Dispersive liquid-liquid microextraction as a rapid, simple and efficient method coupled with high performance liquid chromatography-UV-Vis detection was used for sample preparation and subsequent determination of carbazole, tri nitro carbazole (TrNC) and tetra nitro carbazole in water samples. The influence of several important variables on the extraction efficiency has been evaluated. The methods works best with chloroform as an extractant and acetonitrile as the dispersive solvent. Under optimum conditions, the calibration curve is linear in the range from 0.007 to 1.75 mu g mL(-1) for TNC, 0.006 to 1.52 mu g mL(-1) for TrNC, and 0.008-2.10 mu g mL(-1) for carbazole. The limits of detection (LODs; at a signal-to-noise ratio of 3), range from 1.7 to 1.1 ng mL(-1), for TNC, TrNC and carbazole. Also, the relative standard deviations (RSD, n=6) for the extraction of TNC (at 174 ng mL(-1)), TrNC (at 151 ng mL(-1)) and carbazole (at 84 ng mL(-1)) vary between 4.1 and 5.2%. The enrichment factors range from 179 to 186. The method was successfully applied to the determination of TNC, TrNC and carbazole in environmental samples.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据