{"title":"用络合剂浸渍多孔聚四氟乙烯滤管的新型吸附剂萃取技术:负载双(2-乙基己基)磷酸氢(HDEHP)多孔聚四氟乙烯滤管预富集In(III)","authors":"M. Murakami, T. Takada","doi":"10.1039/A902146I","DOIUrl":null,"url":null,"abstract":"The sorption and elution of In(III) on a porous PTFE filter tube impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) was studied. A 1 µg portion of In(III) in 1000 ml of sample solution was quantitatively complexed with HDEHP adsorbed onto a porous PTFE filter tube by passing the solution through the micropores of the filter tube. Preconcentrated In(III) was then quantitatively recovered provided that the elution, which consisted of cyclical filtering of 0.1 ml of 4 mol l–1 hydrochloric acid through the filter tube for 1 min, was repeated 3 times. The total volume of the eluent was only 0.3 ml in this case; therefore, over 3300-fold of enrichment was attained within 90 min of total preconcentration time. This method was applicable to the preconcentration of In(III) in highly saline samples. A 2.5 µg portion of In(III) could be quantitatively extracted from 500 ml of synthetic seawater and be recovered into 0.5 ml of 4 mol l–1 hydrochloric acid, with subsequent determination by flame AAS. The average recovery and the RSD of the results were 100% and of 1.4%, respectively (n = 5).","PeriodicalId":7814,"journal":{"name":"Analytical Communications","volume":"44 1","pages":"185-188"},"PeriodicalIF":0.0000,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Novel sorbent extraction technique using a chelating agent impregnated porous PTFE filter tube : Preconcentration of In(III) with a bis(2-ethylhexyl) hydrogen phosphate (HDEHP) loaded porous PTFE filter tube\",\"authors\":\"M. Murakami, T. Takada\",\"doi\":\"10.1039/A902146I\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The sorption and elution of In(III) on a porous PTFE filter tube impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) was studied. A 1 µg portion of In(III) in 1000 ml of sample solution was quantitatively complexed with HDEHP adsorbed onto a porous PTFE filter tube by passing the solution through the micropores of the filter tube. Preconcentrated In(III) was then quantitatively recovered provided that the elution, which consisted of cyclical filtering of 0.1 ml of 4 mol l–1 hydrochloric acid through the filter tube for 1 min, was repeated 3 times. The total volume of the eluent was only 0.3 ml in this case; therefore, over 3300-fold of enrichment was attained within 90 min of total preconcentration time. This method was applicable to the preconcentration of In(III) in highly saline samples. A 2.5 µg portion of In(III) could be quantitatively extracted from 500 ml of synthetic seawater and be recovered into 0.5 ml of 4 mol l–1 hydrochloric acid, with subsequent determination by flame AAS. The average recovery and the RSD of the results were 100% and of 1.4%, respectively (n = 5).\",\"PeriodicalId\":7814,\"journal\":{\"name\":\"Analytical Communications\",\"volume\":\"44 1\",\"pages\":\"185-188\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Analytical Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1039/A902146I\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analytical Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/A902146I","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
摘要
研究了浸渍磷酸氢二(2-乙基己基)(HDEHP)的多孔PTFE滤管对In(III)的吸附和洗脱。将1µg In(III)加入1000ml的样品溶液中,通过过滤管的微孔,将溶液与吸附在多孔PTFE过滤管上的HDEHP定量络合。预先浓缩的In(III)定量回收,条件是通过滤管循环过滤0.1 ml 4 mol l-1盐酸1分钟,重复3次。本实验中洗脱液的总体积仅为0.3 ml;因此,在90分钟的总富集时间内,富集量达到3300倍以上。该方法适用于高盐样品中In(III)的预富集。从500 ml合成海水中定量提取2.5µg部分In(III),回收到0.5 ml 4 mol l-1盐酸中,火焰原子吸收法测定。结果的平均回收率为100%,RSD为1.4% (n = 5)。
Novel sorbent extraction technique using a chelating agent impregnated porous PTFE filter tube : Preconcentration of In(III) with a bis(2-ethylhexyl) hydrogen phosphate (HDEHP) loaded porous PTFE filter tube
The sorption and elution of In(III) on a porous PTFE filter tube impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) was studied. A 1 µg portion of In(III) in 1000 ml of sample solution was quantitatively complexed with HDEHP adsorbed onto a porous PTFE filter tube by passing the solution through the micropores of the filter tube. Preconcentrated In(III) was then quantitatively recovered provided that the elution, which consisted of cyclical filtering of 0.1 ml of 4 mol l–1 hydrochloric acid through the filter tube for 1 min, was repeated 3 times. The total volume of the eluent was only 0.3 ml in this case; therefore, over 3300-fold of enrichment was attained within 90 min of total preconcentration time. This method was applicable to the preconcentration of In(III) in highly saline samples. A 2.5 µg portion of In(III) could be quantitatively extracted from 500 ml of synthetic seawater and be recovered into 0.5 ml of 4 mol l–1 hydrochloric acid, with subsequent determination by flame AAS. The average recovery and the RSD of the results were 100% and of 1.4%, respectively (n = 5).