1. Gansu Provincial Key Discipline “Analysis and Treatment of Regional Typical Environmental Pollutants”,School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, China
2. Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control,School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, China
3. Institute of environmental planning, Gansu Academy of Eco-environmental Sciences, Lanzhou, China
4. Soil fertilizer station, Agricultural Bureau, Caoxian, Shandong provience, China