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为了分析评价乌鲁木齐市无公害蔬菜基地的环境质量状况,依据国家标准,对主要蔬菜产地的大气环境指标,按标准规定的方法分别进行布点、采样、检测,用单项污染指数法和综合污染指数法分析其受污染程度,并分析污染物的来源以及污染的途径,为发展无公害蔬菜生产提供科学依据。实验结果表明:乌鲁木齐市蔬菜产地大气环境6个检测点共检测4个项目,样品中二氧化硫含量平均值为0.024mg/L;氮氧化物含量平均值为0.035 mg/L;氟化物平均值为0.56 mg/L;总悬浮颗粒物含量平均值为0.20 mg/L。4种污染物污染水平在标准限量内。检测结果表明乌鲁木齐市四区蔬菜产地环境空气质量符合国家无公害标准要求,可以进行蔬菜种植。
In order to analyze and evaluate the environmental quality of the pollution-free vegetable base in Urumqi, according to the national standards, the atmospheric environmental indicators of the main vegetable producing areas were separately distributed, sampled and tested according to the standard stipulations. The single pollution index method and the comprehensive pollution index method Analyze its pollution degree, analyze the sources of the pollutants and the ways of pollution, and provide a scientific basis for the development of pollution-free vegetables. The results showed that there were 4 items detected in 6 test sites in the atmosphere of vegetable producing area in Urumqi. The average content of sulfur dioxide in samples was 0.024 mg / L, the average content of nitrogen oxides was 0.035 mg / L, and the average value of fluoride was 0.56 mg / L; the average content of total suspended particulates is 0.20 mg / L. Four kinds of pollutant pollution levels within the standard limit. Test results show that four districts of Urumqi, vegetable origin of ambient air quality in line with national standards for pollution-free, you can plant vegetables.