阳极溶出伏安法测定海水中低浓度镉
THE DETERMINATION OF LOW LEVELS CADMIUM IN SEAWATER BY ANODIC STRIPPING VOLTAMMETRY
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摘要: 镉能积累于人体及生物体内造成慢性中毒,引起严重的“骨头病”[1],并与严重的心血管病有连带关系[2].海洋中镉的污染问题已引起人们极大的重视.目前,我国与世界其他国家一样,已将镉的污染列为国家海洋环境重点监测项目之一.Abstract: A simple and rapid m}athod for the determination of Cd at low levels down. to 0.01ug Cd/l in seawater by anodic stripping voltammetry with a precision RSD of 6% and recovery of 92.5% is described. The method was based mainly on the principle of the positive "coordinating effect" of metallic ions during plating.In analysis, a sensitive AD-1 model polerography of Chinese manufacture and its mercury-film electrode was used without any preliminary treatment of the sample. The deoxygenation process was simply performed by adding 3 drops of saturated Na2SO3 solution to 50m1 of seawater sample without passing N2-gas.The total time for a plating and stripping cyae was 6 min.
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国家海洋局《海洋污染概况》编写组,海洋污染概况,石油化学工业出版社,1976.88-91 Cheremisinoff,P,N.&Habib,Y.H.,Water & Sewage Works,19(1972),7.73-85. Riley.J.P.,Chemical Oceanography(eds.J.P.,Riley et al.),London and New York,1975,2nd ed.,Vol.3.343-345. Brown,S.D.et al.,Anal.Chem.Acta,lOT(19T9),13-27. Poldoski,J.E.&Class,G.E.,.AnaI.Chem.Acta,101(1978),1,79-88. Blaedel,W.T.&Wang,J.,Anal.Chem.51(1979),11,1724-1728. Roston,D.A.,Broocks,E.E.&Heineman,W.R.,AnaI.Chem.,51(19T9),11,1728-1732. Wang,J.&Ariel,M.,J.Electroanal.Chem.lnterfacial Electrochim.,83(1977),2,217-224. ————,ditto,85(1977):2,289-297. 国学大连化学物理研究所电化学分析小组,分析化学,5(1977),6,454. 顾宏琪、刘明星,分析化学,2(1974),3,175. -
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