The distribution behavior of traces between aqueous and micro-organic ion-associate phases

水相和微生物离子缔合相之间痕量的分布行为

• 批准号: 16550069
• 负责人: HATA Noriko
• 金额: $ 2.18万
• 依托单位: UNIVERSITY OF TOYAMA
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16550069/
• 关键词: micro ion-associate phase; higher enrichment factor; phase separation; counter ion; 弟4級アンモニウム塩

High-enrichment/determination system was proposed for environmental trace analyses. Micro-organic ion-associate phase (IAP) was formed in situ from an aqueous sample. A trace analyte converted into hydrophobic species or an originally hydrophobic trace analyte was extracted into the IAP quantitatively during the phase formation. After being discarded the aqueous phase, the IAP was dissolved with a small volume of solvent, and the analyte in the concentrate was determined by an appropriate instrumental method. This technique was applied to the preconcentration/determination of ammonia, nitrite, di(2-ethylhexyl) phthalate, and cadmium at their trace levels in environmental water.The IAP extraction of several chemical substances from an aqueous phase was studied by determining the distribution constant K_D between ion associate and aqueous phases. K_D was defined as,K_D=[the concentration of the chemical substances in the IAP]/[the concentration of the chemical substances in the aqueous p … More hase]Three IAP systems made of benzethonium cation (Ben^+) and phenolsulfonate anion (PS^-), benzyldimethyldodecylammonium cation (C_<12>BzMe_2N^+) and PS^-, and benzyldimethyltetradecylammonium cation (C_<14>BzMe_2N^+) and PS^- were investigated.The distribution of estrogens (estrone, 17ss-estradiol and ethinylestradiol) between ion associate and aqueous phases made of Ben^+・PS^- was investigated. More hydrophobic estrogens gave larger K_D than less hydrophobic one. For these three estrogens, log K_D had a positive correlationship with n-octanol/water partition coefficient (log K_<ow>). It was cleared that the ion-associate phase of Ben^+・PS^- has higher extractability than octanol.The differences of log K_D for nonyl phenol, phthalate di-n-pentyl, phthalate di-n-hexyl, phthalate di-n-heptyl and phthalate di-n-octyl in IAP/water were small. The log K_D values for the three IAP systems (Ben^+・PS^-,C_<12>BzMe_2N^+・PS^-, C_<14>BzMe_2N^+・PS^-) were almost the same.The distribution the chemical substances between ion associate and aqueous phases was successfully expressed in term of solvent extraction equilibrium. It is also cleared that the IAP extraction method is effective for ion associates than neutral species. Less

提出了高增强/确定系统进行环境痕量分析。从水样样品原位形成微有机离子缔合相（IAP）。在相形成期间，将转化为疏水物种或最初疏水痕量分析物的痕量分析物被定量提取到IAP中。丢弃水相后，将IAP用少量溶剂溶解，并通过适当的仪器方法确定浓度中的分析物。该技术应用于氨，亚硝酸盐，Di（2-乙基己基）苯甲酸酯的预浓缩/测定，在环境水中的痕量水平，镉从水相中的痕量水平。 k_d的定义为，k_d = [IAP中化学物质的浓度]/[水中化学物质浓度的浓度浓度。 （C_ <12> Bzme_2n^+）和PS^ - 以及苯甲基甲基四乙酰氨基接受（C_ <14> Bzme_2n^+）和PS^ - 的分布。雌激素的分布（Estrone，17Ss-Entradiol和乙基雌激素）在离子和贝酶之间进行了调查^+ps^squise^squise^+^+^+^+^+a^+a^+a^+a^+^+^+++疏水性逃逸量多于疏水性的疏水性更大。对于这三个演变，LOG K_D与N- octanol/水分区系数（Log K_ <WOW>）具有正相关。可以清楚地看出，BEN^+pS^ - 的离子相关相比辛醇具有更高的萃取性。 Nonyl苯酚，邻苯二甲酸苯甲酸苯甲酸苯酚，邻苯二甲酸苯甲酸苯甲酸酯，邻苯二甲酸甲己基，邻苯二甲酸苯甲酸苯甲酸苯胺苯甲酸苯甲酸酯，邻苯二甲酸苯甲酸苯甲酸酯和邻苯二甲酸酯和邻苯二甲酸酯在IAP/水中的差异很小。三个IAP系统的log k_d值（ben^+ps^ - ，c_ <12> bzme_2n^+ps^ - ，c_ <14> bzme_2n^+ps^ - ）几乎相同。在溶剂和水性阶段之间的化学物质之间的分布在溶液中表现出了等值。还可以清楚地看出，与中性物种相比，IAP提取方法对离子助理有效。较少的

项目成果

Salting-out effect on the solid phase extraction of some organic pollutants in water

固相萃取水中部分有机污染物的盐析效应

• 发表时间: 2004
• 期刊: Journal of Ecotechnology Research 10巻・4号
• 作者: Hashi;T.;Hata;N.;Kuramitu;H.;Taguchi;S.
• 通讯作者: S.

微小イオン会合体相抽出および固相抽出/HPLC定量による神通川流域におけるフタル酸ジ(2-エチルヘキシル)の動態調査

采用小离子聚集相萃取和固相萃取/HPLC 定量研究金足河流域邻苯二甲酸二(2-乙基己基)酯的动态

• 发表时间: 2005
• 期刊: Journal of Ecotechnology Research 11巻・3号
• 作者: ユワティニ エリニ;波多 宣子;田口 茂
• 通讯作者: 田口 茂

Micro-organic ion-associate phase extraction and solid extraction/HPLC determination of di(2-ethylhexyl) phthalate and its behavior in Jinzu River basin

金足河流域微生物离子缔合相萃取固相萃取/高效液相色谱法测定邻苯二甲酸二(2-乙基己)酯及其行为

• 发表时间: 2005
• 期刊: Journal of Ecotechnology Research 11(3)
• 作者: YUWATINI Erini;HATA Noriko;TAGUCHI Shigeru
• 通讯作者: TAGUCHI Shigeru