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Investigation of heavy metal contents in Cow milk samples from area of Dhaka, Bangladesh

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Title: Investigation of heavy metal contents in Cow milk samples from area of Dhaka, Bangladesh
Authors: Muhib, Md Iftakharul Browse this author
Chowdhury, Muhammed Alamgir Zaman Browse this author
Easha, Nusrat Jakarin Browse this author
Rahman, Md Mostafizur Browse this author
Shammi, Mashura Browse this author
Fardous, Zeenath Browse this author
Bari, Mohammad Latiful Browse this author
Uddin, M. Khabir Browse this author
Kurasaki, Masaaki Browse this author →KAKEN DB
Alam, Md Khorshed Browse this author
Keywords: Cow milk
Heavy metals
Hazard quotients (HQ)
Carcinogenic risk (CR)
Estimated daily intake (EDI)
Issue Date: Oct-2016
Journal Title: International Journal of Food Contamination
Volume: 3
Issue: 1
Start Page: 16
Publisher DOI: 10.1186/s40550-016-0039-1
Abstract: Background: Cow milk is considered as one of the responsible food sources contaminated with heavy metals. The objectives of the study were to assess the content of selected metals in cow milk and its associated human health risks in the food chain of Bangladesh. A total of 90 cow milk samples of Branded, Dairy and Domestically produced milk were collected randomly from different sources of Savar Upazila in Dhaka area. Cadmium (Cd), chromium (Cr), lead (Pb), manganese (Mn), copper (Cu) and iron (Fe) contents in collected milk samples were determined using Flame Atomic Absorption Spectrometry (FAAS). To ensure quality control, one of the best quality control parameters i.e. recovery test; from eight various sample digestion methods were used. The Hazard Quotient (HQ) and Carcinogenic Risk (CR) values were also calculated. Results: From the results, it was found that, the orders of heavy metal content in brand, dairy and domestic cow milk were Cr > Fe > Cu>Mn > Cd > Pb, Cr > Fe > Mn > Cu > Cd > Pb and Fe > Cr > Mn > Cu > Cd > Pb, respectively. Among the six metals, only Cr showed to exceed the highest Estimated Daily Intake (EDI) rate (for brand cow milk: 0.413 mg/day, dairy farm cow milk: 0.243 mg/day, domestic cow milk: 0. 352 mg/day),and the comparison percentages of calculated values per permeable values were as follows; 206.5 % for brand cow milk,121.5 % for dairy farm cow milk and 176.0 % for domestic cow milk. Hazard Quotients (HQ) values and Carcinogenic Risk (CR) values were found within the acceptable level. Conclusion: Although, the metal content in sampled cow milks were within the safe limit, the potential human health risks cannot be neglected for the regular/long time consumption of heavy metal contained cow milk.
Type: article
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藏崎 正明

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