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汞能造成环境污染,对人体健康有很大威胁。近年西安污灌区农作物中汞的含量己经明显增高,为了搞清其危害程度,1981—1982年我们对该区的土壤和小麦中的含汞量进行了研究。测定方法在西安郊区200多平方公里内,选有代表性的样点53个,南郊代表非污灌区,东、西、北郊代表污灌区,将污灌区和非污灌区所采样品进行比较,对小麦生长有关的空气、水肥和土壤进行调查。分批采集样品分析研究小麦根、茎、叶和籽粒中汞的吸收和积累状况。用YYG-77型冷原子荧光测汞仪测汞,仪器的检出极限5×10~(-11)克/毫升,回收率90—100％。
Mercury can cause environmental pollution and pose a great threat to human health. In recent years, the content of mercury in crops in Xi’an sewage irrigation area has been significantly increased. In order to find out the extent of its harm, we studied the mercury content of soils and wheat in the area from 1981 to 1982. Determination method In the suburbs of Xi’an over 200 square kilometers, select a representative sample of 53, the southern suburbs on behalf of non-sewage irrigated areas, east, west and northern suburbs on behalf of the sewage irrigation areas, sewer and non-sewage irrigated areas were compared samples, Investigate air, water, fertilizer and soil related to wheat growth. Samples were collected in batches to analyze the absorption and accumulation of mercury in roots, stems, leaves and grains of wheat. With YYG-77 cold atomic fluorescence mercury detector mercury detection equipment detection limit of 5 × 10 ~ (-11) g / ml, the recovery rate of 90-100%.