汉江上游水体沉积物污染状况分析与评价

杨婵, 吴娟娟, 车旭曦, 岳思羽, 刘智峰, 宋凤敏

Pollution analysis and assessment of sediments in the upper reaches of the Hanjiang River

YANG Chan, WU Juan-Juan, CHE Xu-Xi, YUE Si-Yu, LIU Zhi-Feng, SONG Feng-Min

表3 汉江上游表层沉积物中重金属总量分析结果统计(n=17)

Table 3 The statistics of results of heavy metals in surface sediments of the upper reaches of Hanjiang River(n=17)

重金属 最大值/10-6 最小值/10-6 平均值/10-6 标准差/10-6 超标率/% 变异系数/% 陕西省土壤 重金属背景 值[15]/10-6 V 108.21 18.88 46.49 23.08 5.88 49.65 76.40 Cr 54.18 12.33 35.63 10.76 11.76 30.20 51.90 Mn 2855.13 110.14 673.15 571.20 58.82 84.85 482.00 Co 22.75 3.54 11.17 4.59 41.18 39.20 11.20 Ni 75.67 3.38 24.78 18.66 17.65 75.30 28.60 Cu 56.50 8.12 22.10 12.43 41.18 56.24 20.40 Zn 156.98 13.06 48.93 30.31 11.76 61.95 68.00 As 32.39 1.45 10.21 6.44 35.29 63.08 11.10 Cd 14.85 0.16 2.22 3.36 100 151.35 0.10 Pb 40.93 11.01 20.86 8.51 35.29 40.80 21.2