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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Method for the analysis of phloxine B, uranine, and related xanthene dyes in soil using supercritical fluid extraction and high-performance liquid chromatography.
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Method for the analysis of phloxine B, uranine, and related xanthene dyes in soil using supercritical fluid extraction and high-performance liquid chromatography.

机译：超临界流体萃取和高效液相色谱法分析土壤中的福禄信B，尿素和相关x吨染料的方法。

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摘要

The use of supercritical fluid (SF) carbon dioxide (CO2) modified by organic solvents and inorganic salts or chelating reagents was investigated for the extraction of the xanthene dyes phloxine B and uranine from soil. Methanol (MeOH), n-butylamine(n-BA), and a chelating agent, ethylenediaminetetraacetic acid tetrasodium salt (Na4EDTA), were the most effective modifiers of SF CO2 for quantitative recoveries of phloxine B and uranine in soils with 10-20% moisture at 60 鳦/476 atm and 60 鳦/272 atm,respectively. At these supercritical fluid extraction (SFE) conditions, recoveries of related xanthene dyes (i.e., 2', 7'-dichlorofluorescein, 4,5,6,7-tetrachlorofluorescein, eosin Y lactone, erythrosin B, and rose bengal) fortified at 25 鎔/g in Hawaiian soils ranged from 65 to 93%. Good separation of a mixture of these dyes was achieved by HPLC. A mixture of MeOH, n-BA, and sodium hexametaphosphate [(NaPO3)6] was effective for conventional solvent extraction of phloxine B and uranine from fortified soils. However, SFE was more selective and gave cleaner extracts. Recoveries were comparable to those by solvent extraction.
机译：研究了使用有机溶剂和无机盐或螯合剂改性的超临界流体（SF）二氧化碳（CO2）从土壤中提取the吨染料福禄辛B和尿素的方法。甲醇（MeOH），正丁胺（n-BA）和螯合剂乙二胺四乙酸四钠盐（Na4EDTA）是SF CO2的最有效的改性剂，可定量回收10-20％的土壤中的草胺B和尿素湿度分别为60鳦/ 476 atm和60鳦/ 272 atm。在这些超临界流体萃取（SFE）条件下，相关的25吨染料（即2'，7'-二氯荧光素，4,5,6,7-四氯荧光素，曙红Y内酯，赤藓红B和玫瑰红）的回收浓度为25夏威夷土壤中的/ g为65％至93％。通过HPLC实现了这些染料混合物的良好分离。 MeOH，n-BA和六偏磷酸钠[（NaPO3）6]的混合物可有效地从强化土壤中常规萃取福禄西汀B和尿素。但是，SFE的选择性更高，提取物更干净。回收率与溶剂萃取的回收率相当。

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