Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample
In aqueous environment, water-soluble polymers are effectively used to separate free metal ions from metal-polymer complexes. The feasibilities of four different analytical techniques, cadmium ion-selective electrode, dialysis sack, chelate disk cartridge, and ultrafiltration, in distinguishing biop...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/270478 |
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| author | Jian Pu Kensuke Fukushi |
| author_facet | Jian Pu Kensuke Fukushi |
| author_sort | Jian Pu |
| collection | DOAJ |
| description | In aqueous environment, water-soluble polymers are effectively used to separate free metal ions from metal-polymer complexes. The feasibilities of four different analytical techniques, cadmium ion-selective electrode, dialysis sack, chelate disk cartridge, and ultrafiltration, in distinguishing biopolymer-bound and nonbound cadmium in aqueous samples were investigated. And two different biopolymers were used, including bovine serum albumin (BSA) and biopolymer solution extracted from cultivated activated sludge (ASBP). The ISE method requires relatively large amount of sample and contaminates sample during the pretreatment. After the long reaction time of dialysis, the equilibrium of cadmium in the dialysis sack would be shifted. Due to the sample nature, chelate disk cartridge could not filter within recommended time, which makes it unavailable for biopolymer use. Ultrafiltration method would not experience the difficulties mentioned above. Ultrafiltration method measuring both weakly and strongly bound cadmium was included in nominally biopolymer-cadmium complex. It had significant correlation with the Ion-selective electrode (ISE) method (R2=0.989 for BSA, 0.985 for ASBP). |
| format | Article |
| id | doaj-art-6e775f2695574afe96a5e415d941df97 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-6e775f2695574afe96a5e415d941df972025-02-03T05:51:30ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/270478270478Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous SampleJian Pu0Kensuke Fukushi1Integrated Research System for Sustainability Science (IR3S), The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, JapanIntegrated Research System for Sustainability Science (IR3S), The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, JapanIn aqueous environment, water-soluble polymers are effectively used to separate free metal ions from metal-polymer complexes. The feasibilities of four different analytical techniques, cadmium ion-selective electrode, dialysis sack, chelate disk cartridge, and ultrafiltration, in distinguishing biopolymer-bound and nonbound cadmium in aqueous samples were investigated. And two different biopolymers were used, including bovine serum albumin (BSA) and biopolymer solution extracted from cultivated activated sludge (ASBP). The ISE method requires relatively large amount of sample and contaminates sample during the pretreatment. After the long reaction time of dialysis, the equilibrium of cadmium in the dialysis sack would be shifted. Due to the sample nature, chelate disk cartridge could not filter within recommended time, which makes it unavailable for biopolymer use. Ultrafiltration method would not experience the difficulties mentioned above. Ultrafiltration method measuring both weakly and strongly bound cadmium was included in nominally biopolymer-cadmium complex. It had significant correlation with the Ion-selective electrode (ISE) method (R2=0.989 for BSA, 0.985 for ASBP).http://dx.doi.org/10.1155/2013/270478 |
| spellingShingle | Jian Pu Kensuke Fukushi Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample The Scientific World Journal |
| title | Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample |
| title_full | Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample |
| title_fullStr | Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample |
| title_full_unstemmed | Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample |
| title_short | Measurement of Cadmium Ion in the Presence of Metal-Binding Biopolymers in Aqueous Sample |
| title_sort | measurement of cadmium ion in the presence of metal binding biopolymers in aqueous sample |
| url | http://dx.doi.org/10.1155/2013/270478 |
| work_keys_str_mv | AT jianpu measurementofcadmiumioninthepresenceofmetalbindingbiopolymersinaqueoussample AT kensukefukushi measurementofcadmiumioninthepresenceofmetalbindingbiopolymersinaqueoussample |