Rezende Patrícia Sueli, Costa Letícia Malta, Windmöller Cláudia Carvalhinho
Departamento de Química, ICEx, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil,
Arch Environ Contam Toxicol. 2015 Apr;68(3):588-602. doi: 10.1007/s00244-015-0134-y. Epub 2015 Feb 12.
Paracatu River Basin, Minas Gerais, Brazil, houses long areas of irrigated agriculture and gold-, lead-, and zinc-mining activities. This region has a prevalence of sulfide minerals and a natural occurrence of high levels of arsenopyrite. In this work, surface water, groundwater, sediments and local vegetable samples were collected in October 2010 and November 2011 and were analyzed to evaluate arsenic (As) distribution, mobility, and transport in these environmental compartments. All sediment samples (738-2,750 mg kg(-1)) and 37 % of the water samples [less than the limit of detection (LOD) to 110 µg L(-1)] from the rivers and streams of Paracatu had As concentrations greater than the quality standards established by national and international environmental organizations (5.9 mg kg(-1) for sediments and 10 µg L(-1) for water). Most vegetable samples had As concentrations within the normal range for plants (lower than the LOD to 120 mg kg(-1)). A correlation among As concentrations in water, sediment, and vegetable samples was verified.
巴西米纳斯吉拉斯州的帕拉卡图河流域分布着大面积的灌溉农业区以及金、铅和锌的采矿活动。该地区硫化物矿物盛行，自然存在大量毒砂。在本研究中，于2010年10月和2011年11月采集了地表水、地下水、沉积物和当地蔬菜样本，对其进行分析以评估砷（As）在这些环境介质中的分布、迁移性和传输情况。帕拉卡图河流和溪流的所有沉积物样本（738 - 2750 mg kg⁻¹）以及37%的水样[低于检测限（LOD）至110 μg L⁻¹]中的砷浓度高于国家和国际环境组织制定的质量标准（沉积物为5.9 mg kg⁻¹，水为10 μg L⁻¹）。大多数蔬菜样本中的砷浓度在植物正常范围内（低于LOD至120 mg kg⁻¹）。证实了水、沉积物和蔬菜样本中砷浓度之间存在相关性。
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