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| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Analytical Chemists Ⅱ |
| Room No. |
303호 |
| Time |
FRI 09:20-: |
| Code |
ANAL2.O-7 |
| Subject |
Various analytical methods for the determination of the arsenic species in rice |
| Authors |
손성훈, 이원배, 남상호*
목포대학교 화학과, Korea
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| Abstract |
The qualitative and quantitative determination of the total arsenic as well as the arsenic species in rice has been very important. However, it has been troublesome due to the matrix interference. In this study, the various analytical methods including the internal standard method and standard addition method have been investigated for the determination of arsenic species in rice. The four different arsenic species in rice have been separated by ion chromatograph, then detected by ICP-MS (inductively coupled plasma mass spectrometry). In addition, the various extraction methods by the nitric acid and the malonic acid have been also investigated. The quality control for rice was done with certified reference material (NIST 1568b CRM). The malonic acid extraction method showed 83 % recovery for the total arsenic, but only 58% recovery for inorganic arsenic. The nitric acid extraction method showed the overestimated results of 114 % recovery to total arsenic. We have used the nitric acid extraction method using arsenobetain as internal standard to improve the accuracy. Thus, we have acquired 96% and 66% recoveries for the total arsenic and inorganic arsenic, respectively. In addition, we have used the standard addition method to reduce the matrix interference. We have acquired 127 % and 111 % recoveries for the total arsenic and inorganic arsenic, respectively. |
| E-mail |
tjdgnsdl333@nate.com |
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119th General Meeting of the KCS