Investigation of feasibility of bamboo charcoal as solid-phase extraction adsorbent for the enrichment and determination of four phthalate esters in environmental water samples.
Investigation of feasibility of bamboo charcoal as solid-phase extraction adsorbent for the enrichment and determination of four phthalate esters in environmental water samples.
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DOI：
10.1016/j.chroma.2008.01.021
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发表时间：
2008-03
期刊：
影响因子：
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通讯作者：
R. Zhao;Xia Wang;Jin-peng Yuan;Jin-Ming Lin
中科院分区：
文献类型：
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作者：
R. Zhao;Xia Wang;Jin-peng Yuan;Jin-Ming Lin
首次研究了竹炭固相萃取邻苯二甲酸酯的吸附性能。将邻苯二甲酸二甲酯(DMP)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸丁基苄酯(BBP)和邻苯二甲酸二丁酯(DBP)定量吸附在竹炭填充柱上，然后用最适量的丙酮解吸保留在柱上的分析物。最后，用高效液相色谱-紫外检测器测定了洗脱液丙酮中的分析物。考察了洗脱剂及其体积、样品流速、样品体积、pH值、吸附剂用量、离子强度等因素对萃取率的影响。在最佳条件下，4种邻苯二甲酸酯的检出限为0.35~0.43μg/L。该方法已用于雨水和自来水样品的分析。加标回收率在75.0-114.2%之间。结果表明，竹炭作为一种新型吸附材料，在实际环境水样中对邻苯二甲酸酯类化合物的富集和测定具有很大的潜力。
This paper demonstrates, for the first time, that adsorptive potential of bamboo charcoal for solid-phase extraction of phthalate esters was investigated. The four phthalate esters, dimethyl phthalate (DMP), diethyl phthalate (DEP), butyl benzyl phthalate (BBP) and di-n-butyl phthalate (DBP), are quantitatively adsorbed on a bamboo charcoal packed cartridge, then the analytes retained on the cartridge are quantitatively desorbed with optimum amounts of acetone. Finally, the analytes in the eluant acetone are determined by high-performance liquid chromatography-ultraviolet detectior. Important parameters influencing the extraction efficiency, such as eluant and its volume, flow rate of sample, sample volume, pH, the amount of adsorbent and ionic strength were investigated and optimized in detail. Under the optimum conditions, the limits of detection were 0.35–0.43μg/L for four phthalate esters. The proposed method has been applied to the analysis of rainwater and tap water samples. And satisfactory spiked recoveries were obtained in the range of 75.0–114.2%. All the results indicated that the bamboo charcoal has great potential as a novel adsorbent material for the enrichment and determination of phthalate esters in real environmental water samples.