本文以细菌Pseudomonas sp.产生的胞外聚合物PS-2作为吸附剂,利用火焰原子吸收光谱法(FAAS)研究了胞外聚合物PS-2对锌的吸附性能,提出了用胞外聚合物作为富集剂,预富集、分离Zn(Ⅱ)的新方法.研究结果表明:在pH 6.0时,该吸附剂对水中的锌离子具有很强的吸附能力且该聚合物对Zn(Ⅱ)的吸附符合Langmuir等温式,静态吸附容量达28.89mg/g,吸附在吸附剂上的锌离子,用0.5 mol/L的硝酸可定量洗脱.方法检出限为4.1μg/L,对初始浓度为0.01 mg/L Zn(Ⅱ)的溶液,独立吸附测定6次,相对标准偏差为3.2%.将其用于河水和井水中痕量锌的富集测定,回收率为95%～102%.
参考文献
| [1] | 张东,关欣,高虹.硅胶G负载纳米钛酸锶钡的制备及其对水中锌（Ⅱ）的吸附性能[J].冶金分析,2008(09):38-42. |
| [2] | 王菲,王连军,李健生,孙秀云,范晨曦.大孔螯合树脂对Pb2+的吸附行为及机理[J].过程工程学报,2008(03):466-471. |
| [3] | 黄国兰;孙红文;戴树桂 .巯基棉预富集、气相色谱原子吸收联用技术测定水样中丁基锡化合物[J].中国环境科学,1997,17(03):283-286. |
| [4] | 刘奇,李全民,张永才.负载8-羟基喹啉的活性炭吸附富集-分光光度法测定水中的痕量钒（Ⅴ）[J].分析化学,2000(03):391. |
| [5] | Pamukoglu Y;Kargi F .Biosorption of copper(II) ions onto powdered waste sludge in a completely mixed fed-batch reactor: Estimation of design parameters[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2007(6):1155-1162. |
| [6] | Karthikeyan S;Balasubramanian R;Yer CSP .Evaluation of the marine algae Ulva fasciata and Sargassum sp for the biosorption of Cu(II) from aqueous solutions[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2007(2):452-455. |
| [7] | Tuzen M;Saygi KO;Usta C;Soylak M .Pseudomonas aeruginosa immobilized multiwalled carbon nanotubes as biosorbent for heavy metal ions[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2008(6):1563-1570. |
| [8] | 朱再盛,罗三来,钟娜,陈炳稔.交联壳聚糖对Zn2+的吸附性能[J].应用化学,2008(05):617-621. |
| [9] | 田禹,黄俊,郑蕾,柳锋,许拴宁.剩余活性污泥胞外聚合物对水中Cd2+和Zn2+的吸附效能[J].南京大学学报（自然科学版）,2006(05):543-548. |
| [10] | Moon S H;Park C S;Kim Y J et al.Biosorption isotherms of Pb(Ⅱ)and Zn(Ⅱ)on Pestan,an extracellular polysaccharide,of Pestalotiopsis sp.KCTC 8637P[J].Process Biochemistry,2006,41:312-316. |
| [11] | ZHENG Yan,FANG Xuliang,YE Zhilong,LI Yahong,CAI weimin.Biosorption of Cu(Ⅱ) on extracellular polymers from Bacillus sp. F19[J].环境科学学报（英文版）,2008(11):1288-1293. |
| [12] | Stephen Inbaraj B;Wang J S;Lu J F et al.Ad-sorption of toxic mercury(Ⅱ)by an extracellular bio-polymer poly(gamma-glutamic acid)[J].Bioresource Technology,2009,100:200-207. |
| [13] | Zhou W Z;Wang J;Shen B L et al.Biosorption of copper(Ⅱ)and cadmium(Ⅱ)by a novel exopolysaccha-ride secreted from deep-sea mesophilic bacterium[J].Colloids and Surfaces B:Biointerfaces,2009,72:295-302. |
| [14] | 闫永胜,刘彬彬,毛艳丽,许化溪,苏兆亮.一株Pseudomonas sp.的分离鉴定与所产絮凝剂性能研究[J].环境科学与技术,2008(06):40-43. |
| [15] | 卢涌泉;邓振华.实用红外光谱解析[M].北京:电子工业出版社,1989:21-29. |
| [16] | 徐雪芹,李小明,杨麒,廖德祥,曾光明,张昱,刘精今.丝瓜瓤固定简青霉吸附废水中Pb2+和Cu2+的机理[J].环境科学学报,2008(01):95-100. |
| [17] | Tuzen M;Sari A;Mendil D et al.Characterization of biosorption process of As(Ⅲ)on green algae Ulothrix cylindricum[J].Journal of Hazardous Materials,2009,165:566-572. |
| [18] | Bayramoglu G;Arica MY .Construction a hybrid biosorbent using Scenedesmus quadricauda and Ca-alginate for biosorption of Cu(II), Zn(II) and Ni(II): Kinetics and equilibrium studies[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2009(1):186-193. |
| [19] | 国家环境保护总局.水和废水监测分析方法[M].北京:中国环境科学出版社,2002 |
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