荸荠土壤中锌、铜、铬的测定及污染评价
|
摘要
利用微波消解-火焰原子吸收光谱法测定荸荠土壤中的锌、铜和铬含量,旨在为荸荠重金属生物有效性研究、合理种植及确保荸荠质量提供参考依据。验证检测方法的检出限、准确度与精密度,分析荸荠土壤中的重金属锌、铜和铬含量,采用单因子污染指数法和潜在生态危害指数法对研究区域荸荠土壤中锌、铜和铬的污染及其生态风险进行评价。结果表明,荸荠土壤中锌、铜、铬含量分别为63.9～126.8、9.1～18.9、1.2～26.8 mg/kg,平均值分别为83.8、12.6、11.4 mg/kg。以食用农产品产地环境质量标准为评价依据,荸荠土壤锌、铜和铬元素均无污染。经潜在生态危害指数分析得知,3种重金属潜在生态危害由强至弱依次为Cu>Zn>Cr。总体上看研究区域荸荠土壤中锌、铜和铬污染风险程度较低。
Microwave digestion-flame atomic absorption spectrometry method was used to determine the concentrations of Zn,Cu and Cr in Water Chestnut Soil. It was provided references for improving bioavailability, planting management and quality of water chestnut. The detection limitation, accuracy and precision of the method were validated, the contents of Zn, Cu and Cr was analyzed. Besides, the pollution degree and ecological risk of Zn, Cu and Cr of the studied water chestnut soil were analyzed by means of single pollution index and potential ecological risk index. The results showed that the range of Zn concentration soils is between 63.9～126.8 mg/kg, the average concentration is 83.8 mg/kg, the range of Cu concentration in soils is between 9.1～18.9 mg/kg, the average concentration is 12.6 mg/kg, the range of Cr concentration in soils is between 1.2～26.8 mg/kg,the average concentration is 11.4 mg/kg. Based on the environmental quality standard of soils for edible agricultural products, Zn, Cu and Cr concentration in soil was at clean level. Moreover, the results of potential ecological risk index showed that the potential ec-ological risk degree of Zn, Cu and Cr was characterized by order of Cu >Zn >Cr. On the whole, the pollution risk degree of Zn, Cu and Cr in water chestnut area soil is low.
Microwave digestion-flame atomic absorption spectrometry method was used to determine the concentrations of Zn,Cu and Cr in Water Chestnut Soil. It was provided references for improving bioavailability, planting management and quality of water chestnut. The detection limitation, accuracy and precision of the method were validated, the contents of Zn, Cu and Cr was analyzed. Besides, the pollution degree and ecological risk of Zn, Cu and Cr of the studied water chestnut soil were analyzed by means of single pollution index and potential ecological risk index. The results showed that the range of Zn concentration soils is between 63.9～126.8 mg/kg, the average concentration is 83.8 mg/kg, the range of Cu concentration in soils is between 9.1～18.9 mg/kg, the average concentration is 12.6 mg/kg, the range of Cr concentration in soils is between 1.2～26.8 mg/kg,the average concentration is 11.4 mg/kg. Based on the environmental quality standard of soils for edible agricultural products, Zn, Cu and Cr concentration in soil was at clean level. Moreover, the results of potential ecological risk index showed that the potential ec-ological risk degree of Zn, Cu and Cr was characterized by order of Cu >Zn >Cr. On the whole, the pollution risk degree of Zn, Cu and Cr in water chestnut area soil is low.
引文
[1]唐昭领,王天顺,牙禹,等.湿法消解-氢化物发生-原子荧光光谱法测定土壤中的铅[J].光谱实验室,2012,29(6):3384-3387.
[2]WANG Z T,ZHENG J,CAO L G,et al.Method for Ultratrace level(241)am determination in large soil samples by sector field-inductively coupled plasma mass spectrometry:With emphasis on the removal of spectral interferences and matrix effect.[J].Analytical Chemistry,2016,88(14):7387-7394.
[3]YASSER S,FARHAD A,FARNOOSH F.Voltammetric determination of Pb,Cd,Zn,Cu and Se in milk and dairy products collected from Iran:An emphasis on permissible limits and risk assessment of exposure to heavy metals[J].Food Chemistry,2016,192:1060-1067.
[4]WANG T S,YA Y,HE J,et al.Determinotion of chromium and zinc in soil by microwave digestion and flame atomic absorption spectrometry[J].Agricultural Science&Technology,2015,16(09):1962-1964.
[5]WANG B,YU J X,HUANG B,et al.Fast monitoring soil environmental qualities of heavy metal by portable X-Ray fluorescence spectrometer[J].Spectroscopy and Spectral Analysis,2015,35(6):1735-1740.
[6]王天顺,莫磊兴,杨玉霞,等.果蔗地土壤中铬、铜和锌含量特征研究[J].西南农业学报,2016,29(4):864-868.
[7]TIAN K,HU W Y,XING Z,et al.Determination and evaluation of heavy metals in soils under two different greenhouse vegetable production systems in eastern China[J].Chemosphere,2016,165(3):555-563.
[8]和庆,彭自然,张晨,等.长三角地区池塘养殖水产品重金属含量及其健康风险评价[J].农业环境科学学报,2017,36(6):1070-1077.
[9]GB 15618-1995,土壤环境质量标准[S].
[10]广西环境保护科学研究所.土壤背景值研究方法及广西土壤背景值[M].南宁:广西科学技术出版社,1992.
[11]HJ/T 332-2006,食用农产品产地环境质量评价标准[S].
[12]吴洋,杨军,周小勇,等.广西都安县耕地土壤重金属污染风险评价[J].环境科学,2015,36(8):2964-2971.
[13]康宏宇,康日峰,张乃明,等.迪庆某铜矿土壤重金属污染潜在生态风险评价[J].环境科学导刊,2016,35(1):75-78.
[2]WANG Z T,ZHENG J,CAO L G,et al.Method for Ultratrace level(241)am determination in large soil samples by sector field-inductively coupled plasma mass spectrometry:With emphasis on the removal of spectral interferences and matrix effect.[J].Analytical Chemistry,2016,88(14):7387-7394.
[3]YASSER S,FARHAD A,FARNOOSH F.Voltammetric determination of Pb,Cd,Zn,Cu and Se in milk and dairy products collected from Iran:An emphasis on permissible limits and risk assessment of exposure to heavy metals[J].Food Chemistry,2016,192:1060-1067.
[4]WANG T S,YA Y,HE J,et al.Determinotion of chromium and zinc in soil by microwave digestion and flame atomic absorption spectrometry[J].Agricultural Science&Technology,2015,16(09):1962-1964.
[5]WANG B,YU J X,HUANG B,et al.Fast monitoring soil environmental qualities of heavy metal by portable X-Ray fluorescence spectrometer[J].Spectroscopy and Spectral Analysis,2015,35(6):1735-1740.
[6]王天顺,莫磊兴,杨玉霞,等.果蔗地土壤中铬、铜和锌含量特征研究[J].西南农业学报,2016,29(4):864-868.
[7]TIAN K,HU W Y,XING Z,et al.Determination and evaluation of heavy metals in soils under two different greenhouse vegetable production systems in eastern China[J].Chemosphere,2016,165(3):555-563.
[8]和庆,彭自然,张晨,等.长三角地区池塘养殖水产品重金属含量及其健康风险评价[J].农业环境科学学报,2017,36(6):1070-1077.
[9]GB 15618-1995,土壤环境质量标准[S].
[10]广西环境保护科学研究所.土壤背景值研究方法及广西土壤背景值[M].南宁:广西科学技术出版社,1992.
[11]HJ/T 332-2006,食用农产品产地环境质量评价标准[S].
[12]吴洋,杨军,周小勇,等.广西都安县耕地土壤重金属污染风险评价[J].环境科学,2015,36(8):2964-2971.
[13]康宏宇,康日峰,张乃明,等.迪庆某铜矿土壤重金属污染潜在生态风险评价[J].环境科学导刊,2016,35(1):75-78.