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DC Field | Value | Language |
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dc.contributor.author | Jaroon Junsomboon | en_US |
dc.contributor.author | Jaroon Jakmunee | en_US |
dc.date.accessioned | 2019-05-07T09:57:19Z | - |
dc.date.available | 2019-05-07T09:57:19Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0125-2526 | en_US |
dc.identifier.uri | http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=7370 | en_US |
dc.identifier.uri | http://cmuir.cmu.ac.th/jspui/handle/6653943832/63804 | - |
dc.description.abstract | Differential pulse anodic stripping voltammetric method has been developed for determination of cadmium and lead released from concrete roofing tiles. The sample was extracted with water for 24 h according to the TIS 535-2540 standard method. An aliquot of 5 mL of the extracted solution and 5 mL of 4% v/v acetic acid solution were put in a voltammetric cell. Then, the solution was stirred at 2000 rpm and purged with nitrogen gas for 3 min before the deposition of the metals was carried out by applying a constant potential of -0.90 V versus Ag/AgCl to a hanging mercury drop electrode (HMDE) for 45 s. After that a differential pulse scanning waveform from -0.90 to -0.10 V was applied and a voltammogram was recorded. Peak current of cadmium and lead were measured at peak potentials of -0.555 and -0.364 V vs Ag/AgCl, respectively. Standard addition procedure was used for quantification. Relative standard deviation for 11 replicate determinations of 8 mgL-1 of both metals were in the range of 1.59 - 1.74%. Percentage recoveries obtained by spiking 8 mgL-1 of cadmium and lead to the sample solution were found to be 107% and with detection limit of 0.15 mgL-1 for both metals. It was found that contents of cadmium and lead released from the concrete roofing tile samples were in the range of < 0.15 - 0.49 mgL-1 and < 0.15 - 11.95 mgL-1, respectively, which are lower than the regulated values of the Thailand industrial standard (TIS 535-2540). The proposed method is simpler, more convenient and more sensitive than the standard method based on an atomic absorption spectrophototometry. | en_US |
dc.language | Eng | en_US |
dc.publisher | Science Faculty of Chiang Mai University | en_US |
dc.title | Determination of Cadmium and Lead in Concrete Roofing Tiles by Differential Pulse Anodic Stripping Voltammetric Method | en_US |
dc.type | บทความวารสาร | en_US |
article.title.sourcetitle | Chiang Mai Journal of Science | en_US |
article.volume | 43 | en_US |
article.stream.affiliations | Physics and Engineering 2 Sub-division, Physics and Engineering Program, Department of Science Service, Ministry of Science and Technology, Bangkok 10400, Thailand. | en_US |
article.stream.affiliations | Department of Chemistry, and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. | en_US |
Appears in Collections: | CMUL: Journal Articles |
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