CAJ | 학술논문

利用ICP技术测定了湘江长沙段沉积物中14种金属元素含量，通过聚类分析法确定了重金属的三个主要来源：自然来源（Cu，Ni和Ph），中上游冶炼工业污染（Cd，Zn）和长沙市原工业区污染（Cr）。运用地累积指数法及潜在生态风险指数法，评价了重金属污染状况。结果表明：（1）湘江长沙段沉积物中重金属Cd、Zn污染较为严重，其含量范围分别为2．7～20．9mg／kg、209．3～662．4mg／kg；（2）研究区域中RI均值为604．5，表明沉积物中重金属属于很强生态危害，且主要风险污染物为Cd。
이용ICP기술측정료상강장사단침적물중14충금속원소함량，통과취류분석법학정료중금속적삼개주요래원：자연래원（Cu，Ni화Ph），중상유야련공업오염（Cd，Zn）화장사시원공업구오염（Cr）。운용지루적지수법급잠재생태풍험지수법，평개료중금속오염상황。결과표명：（1）상강장사단침적물중중금속Cd、Zn오염교위엄중，기함량범위분별위2．7～20．9mg／kg、209．3～662．4mg／kg；（2）연구구역중RI균치위604．5，표명침적물중중금속속우흔강생태위해，차주요풍험오염물위Cd。
14 sediments specimens were sampled systematically from Xiangjiang solved using HC1 -HNO3 -HF- HC104. The following elements were determined by River (Changsha section) and dis- ICP-AES: Al, Cd, Co, Cr, Cu, Fe, Li, Mg, Mn, Ni, Pb, St, V and Zn. Cluster analysis suggested that the heavy metals can be classified into three groups of natural sources ( Cu, Ni and Pb), non - ferrous metal smelting sources in the upper reaches, and Changsha in-ternal industrial sources(Cr). The potential ecological risk index and the index of geoaccumulation were used to evaluate the contamination level of heavy metals in the sediments. The results indicated that Xiangjiang River ( Changsha section) was heavily polluted by Cd and Zn with concentrations ranging from 2. 7 N 20. 9 mg/kg and 209. 3 - 662.4 mg/kg, re-spectively, RI values in this area varied from 178 to 1285 and the mean value reached 603 implying very high ecological risks in most of the sampling sites of the studied area, which were mainly from Cd, and the pollution characteristic of multi-metals in this section was mainly related to Cd.