Wu Xiaoyin; Chen Hong; Yu Ge; Fan Yuhang; Chen Li Env. Info. Center of Nanning; Nanning; Guangxi; 530022; China; Nanning Env. Protection Bureau; Env. Protection Institute of Nanning;

• 南宁市环境信息中心;南宁市环境保护局;南宁市环境保护科学研究所;