Issue 7, 2014

Analysis of arsenic in rice grains using ICP-MS and fs LA-ICP-MS

Abstract

With rice being the main staple crop in Asian countries such as China, Korea and Japan, the detection of arsenic (As), an element known to be carcinogenic to humans, has been the topic of high public interest. In this study, the total arsenic content in 200 white and 104 brown rice samples collected in Korea was analyzed using a Quadrupole Inductively Coupled Plasma-Mass Spectrometer (ICP-MS). One of the rice grain samples was polished with 3, 5, 7, 9 and 11 degrees of milling and arsenic concentration variance from the surface to the inner core region was investigated. Furthermore, spatial distribution of arsenic over the cross-section of a brown rice grain was obtained using femtosecond Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (fs LA-ICP-MS). For the total arsenic content analysis, 91.7 ± 28.1 and 101 ± 33.6 μg−1 kg−1 of arsenic were measured in the white and the brown rice, respectively. The fs LA-ICP-MS mapping image explains that the higher arsenic concentration in the brown rice is due to high arsenic distribution in the rice husk (protective covering of rice). Consequently, some degree of rice milling may be effective in the reduction of arsenic intake.

Graphical abstract: Analysis of arsenic in rice grains using ICP-MS and fs LA-ICP-MS

Article information

Article type
Paper
Submitted
17 二月 2014
Accepted
22 五月 2014
First published
23 五月 2014

J. Anal. At. Spectrom., 2014,29, 1233-1237

Author version available

Analysis of arsenic in rice grains using ICP-MS and fs LA-ICP-MS

S. H. Choi, J. S. Kim, J. Y. Lee, J. S. Jeon, J. W. Kim, R. E. Russo, J. Gonzalez, J. H. Yoo, K. S. Kim, J. S. Yang and K. S. Park, J. Anal. At. Spectrom., 2014, 29, 1233 DOI: 10.1039/C4JA00069B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements