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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：用于化学分析和沙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：在评估公共海滩对健康的潜在危害时，沙子污染是一个重要因素。这项研究的目的是评估四种洗砂程序在去除表面吸附的化学物质方面的性能，并确定哪种化学成分最适合监测沙滩的健康状况。研究了四种洗涤处理：接触，搅拌，超声处理。和沸腾。从三个葡萄牙海滩收集了沙子样本，并对洗涤水进行了分析。观察到的变量分为两个主要组：1）包括硫酸盐，pH和电导率的物理化学参数； 2）污染指标，包括氮和磷的化学性质，化学需氧量（COD）和氧化性。第一组的测量与砂处理没有显着差异（p = 0.89），但是第二组的测量由于高的COD和氧化值而存在差异（p <0.01）。通过超声处理获得最佳的提取产率。就合适的健康质量指标而言，这两个组均未随海滩位置或一年的采样期出现显着变化。但是，根据采样时间（p <0.01）和海滩位置（p <0.001），发现个别化学参数很重要。还发现，根据采样时间，COD和氧化性值也有显着变化（分别为p <0.01和p <0.001）。 COD被确定为最佳砂质指标。

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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;化学需氧量砂处理;

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