Solvent extraction of palladium （Ⅱ） from hydrochloric acid solution with 2-n-octyl-4-isothiazolin-3-one （OIT）/cyclohexane was studied. Effects of different parameters on extraction efficiency were evaluated. 99.9...Solvent extraction of palladium （Ⅱ） from hydrochloric acid solution with 2-n-octyl-4-isothiazolin-3-one （OIT）/cyclohexane was studied. Effects of different parameters on extraction efficiency were evaluated. 99.96 % and 98.26 % palladium （Ⅱ） could be effectively extracted with 0.018 mol·L^-1 OIT/cyclohexane of 0.1 and 4.0 mol·L^-1 HCl medium, respectively. Nonpolar solvent and low acidity could improve the extracting efficiency, and successfully strip palladium （Ⅱ） from the loaded organic phase was achieved with 0.5 mol·L^-1 （NH2）2CS solution. It was proposed that the extraction of Pd com-plexes from HCl medium proceeded through the ion-association mechanism by slope method, NMR and FF-IR spectra.展开更多
In order to define the mortality criteria of planarian objectively,a case study of Dugesia japonica exposed to 1-octyl-3-methylimidazolium bromide([C8mim]Br)was performed followed by a recovery culture.The results sho...In order to define the mortality criteria of planarian objectively,a case study of Dugesia japonica exposed to 1-octyl-3-methylimidazolium bromide([C8mim]Br)was performed followed by a recovery culture.The results showed that defining planarian mortality in light of its body disintegration was appropriate.If the disintegrated tissue of a planarian was more than 1/4 of its body length,it would completely degenerate.However,a planarian would regenerate the lost tissue and return to normal after a few days’recovery culture if the disintegrated part was less than 1/4 of body length.Therefore,we propose to use body disintegration as the endpoint of planarian mortality,i.e.,1/4 body length degenerated is the critical threshold of mortality and survival of planarians when exposed to toxicants.This criterion could be adapted in the standardization of testing protocols and comparability of acute toxicity test or other toxicological research using planarian as the test animal.展开更多
在101.3 k Pa下,用改进的Othmer釜测定了乙酸乙酯-乙腈-1-辛基-3-甲基咪唑六氟磷酸盐([OMIM]PF_6)三组分物系的等压汽液相平衡数据,并应用NRTL模型对汽液相平衡的数据进行了关联。实验结果表明,[OMIM]PF_6对乙酸乙酯有明显的盐析效应;...在101.3 k Pa下,用改进的Othmer釜测定了乙酸乙酯-乙腈-1-辛基-3-甲基咪唑六氟磷酸盐([OMIM]PF_6)三组分物系的等压汽液相平衡数据,并应用NRTL模型对汽液相平衡的数据进行了关联。实验结果表明,[OMIM]PF_6对乙酸乙酯有明显的盐析效应;离子液体的加入使乙酸乙酯-乙腈二组分物系的汽液平衡曲线发生偏离,离子液体加入量越大,偏离程度越大;乙酸乙酯-乙腈-[OMIM]PF_6三组分物系乙酸乙酯的汽相摩尔分数的实验值与计算值的绝对平均偏差为0.004,温度平均偏差为0.4 K。展开更多
3-Octyl-thiophene is a reactive monomer important derivatives of polythiophen.3-Octyl-thiophene is prepared by coupling 3-bromothiophene with n-octane bromide.The products of the reaction are analyzed by gas chromatog...3-Octyl-thiophene is a reactive monomer important derivatives of polythiophen.3-Octyl-thiophene is prepared by coupling 3-bromothiophene with n-octane bromide.The products of the reaction are analyzed by gas chromatograph-mass spectrometry.The results show that there are four kinds of compounds in the reactive liquid.The main yield is 3-octyl-thiophene,while main by-product is 3,3’-bithiophene.展开更多
基金financially supported by the National Natural Science Foundation of China(No.21271073)
文摘Solvent extraction of palladium （Ⅱ） from hydrochloric acid solution with 2-n-octyl-4-isothiazolin-3-one （OIT）/cyclohexane was studied. Effects of different parameters on extraction efficiency were evaluated. 99.96 % and 98.26 % palladium （Ⅱ） could be effectively extracted with 0.018 mol·L^-1 OIT/cyclohexane of 0.1 and 4.0 mol·L^-1 HCl medium, respectively. Nonpolar solvent and low acidity could improve the extracting efficiency, and successfully strip palladium （Ⅱ） from the loaded organic phase was achieved with 0.5 mol·L^-1 （NH2）2CS solution. It was proposed that the extraction of Pd com-plexes from HCl medium proceeded through the ion-association mechanism by slope method, NMR and FF-IR spectra.
基金supported by the National Natural Science Foundation of China(31471965)the Natural Science Foundation of Henan P rovince(142300410457)the National Student Innovation Training P roject of Henan Normal University(201410476051)
文摘In order to define the mortality criteria of planarian objectively,a case study of Dugesia japonica exposed to 1-octyl-3-methylimidazolium bromide([C8mim]Br)was performed followed by a recovery culture.The results showed that defining planarian mortality in light of its body disintegration was appropriate.If the disintegrated tissue of a planarian was more than 1/4 of its body length,it would completely degenerate.However,a planarian would regenerate the lost tissue and return to normal after a few days’recovery culture if the disintegrated part was less than 1/4 of body length.Therefore,we propose to use body disintegration as the endpoint of planarian mortality,i.e.,1/4 body length degenerated is the critical threshold of mortality and survival of planarians when exposed to toxicants.This criterion could be adapted in the standardization of testing protocols and comparability of acute toxicity test or other toxicological research using planarian as the test animal.
文摘在101.3 k Pa下,用改进的Othmer釜测定了乙酸乙酯-乙腈-1-辛基-3-甲基咪唑六氟磷酸盐([OMIM]PF_6)三组分物系的等压汽液相平衡数据,并应用NRTL模型对汽液相平衡的数据进行了关联。实验结果表明,[OMIM]PF_6对乙酸乙酯有明显的盐析效应;离子液体的加入使乙酸乙酯-乙腈二组分物系的汽液平衡曲线发生偏离,离子液体加入量越大,偏离程度越大;乙酸乙酯-乙腈-[OMIM]PF_6三组分物系乙酸乙酯的汽相摩尔分数的实验值与计算值的绝对平均偏差为0.004,温度平均偏差为0.4 K。
文摘3-Octyl-thiophene is a reactive monomer important derivatives of polythiophen.3-Octyl-thiophene is prepared by coupling 3-bromothiophene with n-octane bromide.The products of the reaction are analyzed by gas chromatograph-mass spectrometry.The results show that there are four kinds of compounds in the reactive liquid.The main yield is 3-octyl-thiophene,while main by-product is 3,3’-bithiophene.
