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Heavy metal content of produce grown in San Juan County (New Mexico, USA).
Journal of Environmental Science and Health, Part B ( IF 2 ) Pub Date : 2020-07-15 , DOI: 10.1080/03601234.2020.1794220
Alyce N Matthews 1 , Stephanie Rogus 1 , Gaurav Jha 1 , April Ulery 1 , Efren Delgado 1 , Kevin Lombard 1 , Barbara Hunter 1 , Brandon Francis 1
Affiliation  

Abstract

The Animas River Watershed has long received discharges of naturally occurring acid rock drainage; however, on August 5, 2015, three million gallons flowed into the agricultural region of Farmington, New Mexico and the Navajo Nation. Consumers and growers in the region were fearful that produce might absorb heavy metals from contaminated irrigation water originating from these rivers. Samples were collected from the region including corn (n = 30), pumpkin (n = 10), squash (n = 10), and cucumber (n = 10) then processed and tested using inductively coupled plasma-optical emission spectrometry (ICP-OES) for concentrations of nine metals of interest. These include toxic metals: Al, As, and Pb, which were compared to the World Health Organization limits, 18.29 mg d−1, 0.192 mg d−1, and 0.05 mg kg−1, respectively and essential metals: Cr, Fe, Mn, Zn, Ca, and Cu whose levels were compared to the National Academies’ dietary references for tolerable upper intake levels. Results indicate that produce grown in the region contained significantly less metal than the allowable limits, except for Pb in two corn samples. This research is the first attempt to monitor and analyze heavy metal absorption of produce in the area.



中文翻译:

圣胡安县(美国新墨西哥州)种植的农产品中重金属含量。

摘要

长期以来,阿尼马斯河流域已接收到天然存在的酸性岩石排泄物。但是,在2015年8月5日,三百万加仑的汽油流入了法明顿,新墨西哥州和纳瓦霍族的农业地区。该地区的消费者和种植者担心农产品可能会吸收来自这些河流的受污染的灌溉水中的重金属。从包括玉米(n  = 30),南瓜(n  = 10),南瓜(n  = 10)和黄瓜(n = 10),然后使用电感耦合等离子体发射光谱仪(ICP-OES)对9种目标金属的浓度进行处理和测试。这些包括有毒金属:铝,砷,和Pb,其进行了比较,世界卫生组织限制,18.29毫克d -1,0.192毫克d -1和0.05mg千克-1,分别和基本金属:铬,铁,锰,锌,钙和铜的含量与美国国家科学院的饮食参考标准相比较,可以忍受较高的摄入量。结果表明,除了两个玉米样品中的Pb以外,该地区生长的农产品中所含金属的含量明显低于允许的限值。这项研究是监测和分析该地区农产品重金属吸收的首次尝试。

更新日期:2020-07-15
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