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首页> 外文期刊>Environmental engineering and management journal >SAND TREATMENT PROCEDURES FOR CHEMICAL ANALYSIS AND BEACH SAND QUALITY
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SAND TREATMENT PROCEDURES FOR CHEMICAL ANALYSIS AND BEACH SAND QUALITY

机译：用于化学分析和海滩砂质量的砂处理程序

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摘要

Sand contamination is an important factor when assessing the health hazard potential of public beaches. The goals of this study are to assess the performance of four sand washing procedures on the removal of surface adsorbed chemical species, and to identify which chemical components are best suited for monitoring the health quality of beach sand. Four washing treatments were investigated: contact, stirring, sonication. and boiling. Sand samples were collected from three Portuguese beaches and the wash water analysed. The observed variables were specified in two main groups: 1) physicochemical parameters comprising sulphates, pH, and conductivity; and 2) pollution indicators including nitrogen and phosphorous chemistries, chemical oxygen demand (COD), and oxidability. The Group I measurements did not exhibit significant differences with sand treatment (p=0.89), but there were differences in the Group Ⅱ measurements due to the higher COD and oxidability values (p<0.01). The best extraction yield was obtained with sonication. In terms of a suitable health quality marker, neither group exhibited significant variation with beach location or sampling period of year. Individually, however, several chemical parameters were found to be significant on the basis of sampling period (p < 0.01) and beach location (p< 0.001). The COD and oxidability values were also found to vary significantly on the basis of sampling period (p < 0.01 and p< 0.001. respectively). COD was determined to the best sand quality indicator.
机译：砂污染是评估公共海滩健康灾害潜力时的重要因素。本研究的目标是评估四种砂洗涤程序对表面吸附的化学物质的性能，并确定哪种化学成分最适合监测海滩沙滩的健康质量。研究了四种洗涤处理：接触，搅拌，超声。和沸腾。从三个葡萄牙海滩和分析的洗涤水中收集了沙子样品。观察到的变量在两个主要组中指定：1）含有硫酸盐，pH和电导率的物理化学参数; 2）污染指标，包括氮和磷化学，化学需氧量（COD）和氧化性。 I族测量没有表现出与砂处理的显着差异（p = 0.89），但由于COD和氧化性值较高，Ⅱ组测量差异（P <0.01）。通过超声处理获得最佳的提取产量。就合适的健康质量标志来说，既未展示过海滩位置或年份的采样时间都存在显着变化。然而，单独地发现几种化学参数在采样期（P <0.01）和海滩位置（P <0.001）的基础上是显着的。还发现COD和氧化性值在取样周期的基础上显着变化（分别为P <0.01和P <0.001）。 COD被确定为最佳的砂质量指标。

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    Mario Dias Almeida; Sonia Sousa; Joao Sebastiao Rebelo; Lucilia Vales; Katrin Schifferegger; Cristina Maria Martins Almeida;

  • 作者单位

    Laboratory of Bromatology and Water Quality Faculty of Pharmacy Av. Prof. Gama Pinto 1649-003- Lisboa Portugal;

    Laboratory of Bromatology and Water Quality Faculty of Pharmacy Av. Prof. Gama Pinto 1649-003- Lisboa Portugal;

    Laboratory of Bromatology and Water Quality Faculty of Pharmacy Av. Prof. Gama Pinto 1649-003- Lisboa Portugal;

    Laboratory of Bromatology and Water Quality Faculty of Pharmacy Av. Prof. Gama Pinto 1649-003- Lisboa Portugal;

    Marina de Vilamoura S.A. Marina de Vilamoura 8125-409 Quarteira Portugal;

    Laboratory of Bromatology and Water Quality Faculty of Pharmacy Av. Prof. Gama Pinto 1649-003- Lisboa Portugal iMed The Institute for Medicines and Pharmaceutical Sciences Faculty of Pharmacy Av. Prof. Gama Pinto 1649-003- Lisboa Portugal;

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  • 正文语种 eng
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  • 关键词

    beach sand; chemical indicators; chemical analysis; COD; sand treatment;

    机译：沙滩;化学指标;化学分析;鳕鱼;砂处理;

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