Catechol-type chitosan resin and salicylic acid-type chitosan resin were easily synthesized for use in estimating the adsorption behavior of 34 elements at pH 1 - 7 in aquatic media. The catechol-type chitosan resin could adsorb Cu(II) at pH 3 - 7, In(III) at pH 4 - 6, Pb(II) and lanthanoids at pH 5 - 7, and U(VI) at pH 4 - 7 more effectively than the salicylic acid-type chitosan resin and the cross-linked chitosan resin (base material). Adsorption ability was in the order: catechol-type chitosan resin > salicylic acid-type chitosan resin > cross-linked chitosan resin.
en-copyright= kn-copyright= en-aut-name=OshitaKoji en-aut-sei=Oshita en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakayanagiToshio en-aut-sei=Takayanagi en-aut-mei=Toshio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OshimaMitsuko en-aut-sei=Oshima en-aut-mei=Mitsuko kn-aut-name=大島光子 kn-aut-sei=大島 kn-aut-mei=光子 aut-affil-num=3 ORCID= en-aut-name=MotomizuShoji en-aut-sei=Motomizu en-aut-mei=Shoji kn-aut-name=本水昌二 kn-aut-sei=本水 kn-aut-mei=昌二 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of International Conservation Studies for Cultural Properties, Faculty of Cultural Properties, Kibi International University affil-num=2 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Okayama University affil-num=3 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Okayama University affil-num=4 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Okayama University en-keyword=CHEMICALLY-MODIFIED CHITOSAN kn-keyword=CHEMICALLY-MODIFIED CHITOSAN en-keyword=SELECTIVE ADSORPTION; ICP-MS kn-keyword=SELECTIVE ADSORPTION; ICP-MS en-keyword=COLUMN COLLECTION/CONCENTRATION kn-keyword=COLUMN COLLECTION/CONCENTRATION en-keyword=COMPLEXANE TYPES kn-keyword=COMPLEXANE TYPES en-keyword=PRECIOUS METALS kn-keyword=PRECIOUS METALS en-keyword=DERIVATIVES kn-keyword=DERIVATIVES en-keyword=COPRECIPITATION kn-keyword=COPRECIPITATION en-keyword=COPPER(II) kn-keyword=COPPER(II) en-keyword=BEHAVIOR kn-keyword=BEHAVIOR END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=5 article-no= start-page=589 end-page=594 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=20080510 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determination of trace heavy metals by sequential injection-anodic stripping voltammetry using bismuth film screen-printed carbon electrode en-subtitle= kn-subtitle= en-abstract= kn-abstract=A sequential injection-square-wave anodic stripping voltammetry (SIA-SWASV) is proposed for the simultaneous determination of Pb(II), Cd(II) and Zn(II), employing an in situ plated bismuth film screen-printed carbon electrode (Bi-SPCE) as a working electrode and hydrochloric acid as a supporting electrolyte. Bi(III) and analyte metal ions were on-line deposited onto a SPCE at -1.4 V vs. Ag/AgCl for 180 s. At a stopped flow, a square-wave voltammogram was recorded from -1.3 to 0 V vs. Ag/AgCl. The experimental conditions were optimized. Under the optimum conditions, the linear ranges were 0 - 70 mu g L-1 for Pb(II) and Cd(II), and 75 - 200 mu g L-1 for Zn(II). The limits of detection (S/N = 3) were obtained at concentrations as low as 0.89 mu g L-1 for Pb(II) and 0.69 mu g L-1 for Cd(II) for a 180-s deposition time. The proposed method was applied to the determination of Pb(II), Cd(II) and Zn(II) in water samples with satisfactory results.
en-copyright= kn-copyright= en-aut-name=ChuanuwatanakulSuchada en-aut-sei=Chuanuwatanakul en-aut-mei=Suchada kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=DungchaiWijitar en-aut-sei=Dungchai en-aut-mei=Wijitar kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ChailapakulOrawon en-aut-sei=Chailapakul en-aut-mei=Orawon kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MotomizuShoji en-aut-sei=Motomizu en-aut-mei=Shoji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Chulalongkorn University affil-num=2 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Chulalongkorn University affil-num=3 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Chulalongkorn University affil-num=4 en-affil= kn-affil=Department of Chemistry, Faculty of Science, Okayama University en-keyword=DIAMOND THIN-FILM kn-keyword=DIAMOND THIN-FILM en-keyword=FLOW-INJECTION kn-keyword=FLOW-INJECTION en-keyword=PLATED CARBON; WATER SAMPLES; COPPER kn-keyword=PLATED CARBON; WATER SAMPLES; COPPER en-keyword=LEAD kn-keyword=LEAD en-keyword=ZINC kn-keyword=ZINC en-keyword=EXTRACTS kn-keyword=EXTRACTS en-keyword=CADMIUM kn-keyword=CADMIUM en-keyword= CD(II) kn-keyword= CD(II) END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=5 article-no= start-page=631 end-page=635 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=20080510 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Minimization of Sample Volume with Air-segmented SampleInjection and the Simultaneous Determination of TraceElements by ICP-MS en-subtitle= kn-subtitle= en-abstract= kn-abstract=The application of inductively coupled plasma mass spectrometry (ICP-MS) to forensic chemistry was studied. The developed method, air-segmented sample injection (ASSI) coupled with ICP-MS, allowed the determination of about 25 elements at the sub-ppb level with only 0.2 ml of a sample solution. The optimum sample flow rate was found to be 0.4 ml min?1, along with a sample suction time of 30 s. The proposed method was validated by determining trace elements in river-water certified reference material (SLRS-4) issued by National Research Council Canada. The analytical results of the proposed method were in good agreement with the certified values. This method was successfully applied to a human hair sample, the volume of which was 3 ml. en-copyright= kn-copyright= en-aut-name=NoguchiOsamu en-aut-sei=Noguchi en-aut-mei=Osamu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OshimaMitsuko en-aut-sei=Oshima en-aut-mei=Mitsuko kn-aut-name=大島光子 kn-aut-sei=大島 kn-aut-mei=光子 aut-affil-num=2 ORCID= en-aut-name=MotomizuShoji en-aut-sei=Motomizu en-aut-mei=Shoji kn-aut-name=本水昌二 kn-aut-sei=本水 kn-aut-mei=昌二 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 END