5 research outputs found
A field deployable method for a rapid screening analysis of inorganic arsenic in seaweed
The authors thank the support for getting the seaweed samples from the projects funded under the Department of Agriculture, Food and the Marineâs Competitive research programmes in Ireland. Reference number 14 SF 860. The authors thank Corny Brombach for the graphical abstract.Peer reviewedPublisher PD
Detection of Inorganic Arsenic in Rice Using a Field Test Kit: A Screening Method
Rice
is a staple food eaten by more than 50% of the worldâs
population and is a daily dietary constituent in most South East Asian
countries where 70% of the rice export comes from and where there
is a high level of arsenic contamination in groundwater used for irrigation.
Research shows that rice can take up and store inorganic arsenic during
cultivation, and rice is considered to be one of the major routes
of exposure to inorganic arsenic, a class I carcinogen for humans.
Here, we report the use of a screening method based on the Gutzeit
methodology to detect inorganic arsenic (iAs) in rice within 1 h.
After optimization, 30 rice commodities from the United Kingdom market
were tested with the field method and were compared to the reference
method (high-performance liquid chromatography-inductively coupled
plasma-mass spectrometry, HPLC-ICP-MS). In all but three rice samples,
iAs compound can be determined. The results show no bias for iAs using
the field method. Results obtained show quantification limits of about
50 ÎŒg kg<sup>â1</sup>, a good reproducibility for a field
method of ±12%, and only a few false positives and negatives
(<10%) could only be recorded at the 2015 European Commission (EC)
guideline for baby rice of 100 ÎŒg kg<sup>â1</sup>, while
none were recorded at the maximum level suggested by the World Health
Organization (WHO) and implemented by the EC for polished and white
rice of 200 ÎŒg kg<sup>â1</sup>. The method is reliable,
fast, and inexpensive; hence, it is suggested to be used as a screening
method in the field for preselection of rice which violates legislative
guidelines