Transport of Arsenic in Reclaimed Water-Soil-Fruit and Vegetable System.Transport of Arsenic in Reclaimed Water-Soil-Fruit and Vegetable System[J].Northern Horticulture,2014,38(05):169-172.
再生水-土壤-果蔬体系中砷的迁移
- Title:
- Transport of Arsenic in Reclaimed Water-Soil-Fruit and Vegetable System
- 文章编号:
- 1001-0009(2014)05-0169-04
- Keywords:
- arsenic; reclaimed water; sludge; soil; fruit and vegetable
- 分类号:
- X 53
- 文献标志码:
- A
- 摘要:
- 以小白菜、萝卜和葡萄为试材,采用再生水灌溉和污泥施肥,经过2011~2012年2 a的田间小区试验,采用原子吸收光谱仪氢化物发生装置分析了灌溉水、土壤和果蔬样品中As的含量。结果表明:灌溉用清水和再生水中As的含量均未超出国家农田灌溉水质标准(GB5084-2005)中As的限量标准,清水中As含量高于再生水中As的含量;根据国家《农用污泥中污染物控制标准(GB4284-84)》,污泥中As含量连续2 a均未超标;对土壤中As含量的测定值显示2012年>2011年>本底值,说明清水灌溉、再生水灌溉及污泥施肥均可造成表层土壤中As的累积,但尚未超过国家标准的限量规定;2011年蔬菜样品地上部分及葡萄中As含量有检出,表现为清水灌溉>再生水灌溉,2012年果蔬样品中均未检测出As;果蔬样品中As含量均未超出《GB2764-2012食品中污染物限量》的规定。
- Abstract:
- Taking Chinese cabbage,radish and grape as test materials,using recycled water for irrigation and sludge for fertilization,after 2011 and 2012 two years field experiments.Atomic absorption spectrometer hydride generating device was used to analyze the As content of irrigation water,soil,fruit and vegetable samples.The results showed that As content of irrigation-purpose clean water and reclaimed water were within As limits stated by national standard for farmland irrigation water quality (GB5084-2005),and As content of clean water was higher than that of reclaimed water;according to the Standard of Pollutants Control in Farm Sludge (GB4284-84),the As content in the sludge did not exceed the limits stated by the Standard for two consecutive years.Concerning the measured value of As content in soil,it was 2012>2011>background value,which indicated that As accumulation in the surface soil as a result of clean water irrigation,irrigation with reclaimed water and sludge fertilizer,but did not yet exceeded the limits specified by the national standard.As was detected in the aboveground parts of vegetable samples and grape in 2011,and the result showed that As content with clean water irrigation>that with reclaimed water irrigation.No As was detected in the vegetable and grape samples in 2012.As content in the fruit and vegetable samples did not exceeded the limits of contaminants in Food GB2764-2012.
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备注/Memo
第一作者简介:蔡亭亭(1988-),女,硕士研究生,研究方向为废弃物处理与资源化利用。