Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 180-185 |
| Number of pages | 6 |
| Journal | Food Chemistry |
| Volume | 263 |
| Early online date | 30 Apr 2018 |
| DOIs | |
| Publication status | Published - 15 Oct 2018 |
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Keywords
- Rice
- arsenic
- field deployable method
- inorganic arsenic
- laboratory
- onsite
- maximum contaminant limit
Cite this
Comparison of on-site field measured inorganic arsenic in rice with laboratory measurements using a field deployable method : Method validation. / Mlangeni, Angstone Thembachako; Vecchi, Valeria; Norton, Gareth J.; Raab, Andrea; Krupp, Eva M.; Feldmann, Joerg.
In: Food Chemistry, Vol. 263, 15.10.2018, p. 180-185.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Comparison of on-site field measured inorganic arsenic in rice with laboratory measurements using a field deployable method
T2 - Method validation
AU - Mlangeni, Angstone Thembachako
AU - Vecchi, Valeria
AU - Norton, Gareth J.
AU - Raab, Andrea
AU - Krupp, Eva M.
AU - Feldmann, Joerg
N1 - The authors express profound gratitude to the support of Commonwealth Scholarship funded by the UK government to Angstone Thembachako Mlangeni (MWCS-2015-334). The authors also acknowledges financial support from the Lilongwe University of Agriculture and Natural Resources (Malawi) for the field work. ATM acknowledges help and instrumentation technical support of Dr Edi Bralatei and Dr Magali Perez. ATM also acknowledges help and support of staff and farmers of Lifuwu, Bwanje, Domasi, Khanda, Baka, Nkondezi (Limphasa), Hara, Lufiriya, Kasinthuala, Nazolo and Nkhate research stations and rice schemes.
PY - 2018/10/15
Y1 - 2018/10/15
N2 - A commercial arsenic field kit designed to measure inorganic arsenic (iAs) in water was modified into a field deployable method (FDM) to measure iAs in rice. While the method has been validated to give precise and accurate results in the laboratory, its on-site field performance has not been evaluated. This study was designed to test the method on-site in Malawi in order to evaluate its accuracy and precision in determination of iAs on-site by comparing with a validated reference method and giving original data on inorganic arsenic in Malawian rice and rice-based products. The method was validated by using the established laboratory-based HPLC-ICPMS. Statistical tests indicated there were no significant differences between on-site and laboratory iAs measurements determined using the FDM (p=0.263, ά=0.05) and between on-site measurements and measurements determined using HPLC-ICP-MS (p=0.299, ά=0.05). This method allows quick (within 1 hour) and efficient screening of rice containing iAs concentrations on-site.
AB - A commercial arsenic field kit designed to measure inorganic arsenic (iAs) in water was modified into a field deployable method (FDM) to measure iAs in rice. While the method has been validated to give precise and accurate results in the laboratory, its on-site field performance has not been evaluated. This study was designed to test the method on-site in Malawi in order to evaluate its accuracy and precision in determination of iAs on-site by comparing with a validated reference method and giving original data on inorganic arsenic in Malawian rice and rice-based products. The method was validated by using the established laboratory-based HPLC-ICPMS. Statistical tests indicated there were no significant differences between on-site and laboratory iAs measurements determined using the FDM (p=0.263, ά=0.05) and between on-site measurements and measurements determined using HPLC-ICP-MS (p=0.299, ά=0.05). This method allows quick (within 1 hour) and efficient screening of rice containing iAs concentrations on-site.
KW - Rice
KW - arsenic
KW - field deployable method
KW - inorganic arsenic
KW - laboratory
KW - onsite
KW - maximum contaminant limit
U2 - 10.1016/j.foodchem.2018.04.133
DO - 10.1016/j.foodchem.2018.04.133
M3 - Article
VL - 263
SP - 180
EP - 185
JO - Food Chemistry
JF - Food Chemistry
SN - 0308-8146
ER -