辽宁农业科学
遼寧農業科學
료녕농업과학
LIAONING AGRICULTURAL SCIENCES
2015年
1期
28-32
,共5页
细河土壤%重金属污染%现状评价
細河土壤%重金屬汙染%現狀評價
세하토양%중금속오염%현상평개
Soils along XiHe River%Heavy Metal Contamination%Status Assessment
以细河沿岸污染土壤为对象,选取富官、翟家、大潘、彰驿站、大兀拉、前余6个区域,分0~10 cm、10~20 cm、20~30 cm 三层采集土壤样本,分析测定土壤中 Cu、Zn、Pb、Cd、Ni 的含量,应用单项质量指数和综合质量指数对土壤重金属污染现状进行评价。结果发现,研究区域的土壤 Cu、Zn、Pb、Cd、Ni 的含量分别为:20.96~78.49,6.73~155.54,22.86~159.99,0.61~7.69,1.87~18.99 mg /kg。6个区域土壤 0~30 cm 三层的综合污染指数达到 1.52~18.7,说明重金属污染严重,且中下游的4个区域土壤污染程度呈现随土层深度增加而加重的趋势;其中,Cd 污染最重,所有样点三个土层 Cd 含量均超土壤环境质量标准的二级标准限值,超标达 1.02~24.62倍;Cu,仅富官的部分样点超标,为轻度污染(PCu≤1.49),Ni、Zn、Pb 则 6个区域均未受明显污染。
以細河沿岸汙染土壤為對象,選取富官、翟傢、大潘、彰驛站、大兀拉、前餘6箇區域,分0~10 cm、10~20 cm、20~30 cm 三層採集土壤樣本,分析測定土壤中 Cu、Zn、Pb、Cd、Ni 的含量,應用單項質量指數和綜閤質量指數對土壤重金屬汙染現狀進行評價。結果髮現,研究區域的土壤 Cu、Zn、Pb、Cd、Ni 的含量分彆為:20.96~78.49,6.73~155.54,22.86~159.99,0.61~7.69,1.87~18.99 mg /kg。6箇區域土壤 0~30 cm 三層的綜閤汙染指數達到 1.52~18.7,說明重金屬汙染嚴重,且中下遊的4箇區域土壤汙染程度呈現隨土層深度增加而加重的趨勢;其中,Cd 汙染最重,所有樣點三箇土層 Cd 含量均超土壤環境質量標準的二級標準限值,超標達 1.02~24.62倍;Cu,僅富官的部分樣點超標,為輕度汙染(PCu≤1.49),Ni、Zn、Pb 則 6箇區域均未受明顯汙染。
이세하연안오염토양위대상,선취부관、적가、대반、창역참、대올랍、전여6개구역,분0~10 cm、10~20 cm、20~30 cm 삼층채집토양양본,분석측정토양중 Cu、Zn、Pb、Cd、Ni 적함량,응용단항질량지수화종합질량지수대토양중금속오염현상진행평개。결과발현,연구구역적토양 Cu、Zn、Pb、Cd、Ni 적함량분별위:20.96~78.49,6.73~155.54,22.86~159.99,0.61~7.69,1.87~18.99 mg /kg。6개구역토양 0~30 cm 삼층적종합오염지수체도 1.52~18.7,설명중금속오염엄중,차중하유적4개구역토양오염정도정현수토층심도증가이가중적추세;기중,Cd 오염최중,소유양점삼개토층 Cd 함량균초토양배경질량표준적이급표준한치,초표체 1.02~24.62배;Cu,부부관적부분양점초표,위경도오염(PCu≤1.49),Ni、Zn、Pb 칙 6개구역균미수명현오염。
The heavy metal pollution were investigated at the contaiminated soils of XiHe River Area.Six sam-pling locations,e.g.FuGan,ZhaiJia,DaPan,ZhangYiZhan,DaWuLa and QianYu were selected,and 4 sub-sites were determined in each sampling site,respectively.Soil samples were taken from 3 layers (0 ~10 cm,10 ~20 cm,20 ~30 cm)in October 2013,and then 72 soil samples were collected.The contents of 5 kinds of heavey metals,e.g.Cu,Zn,Pb,Cd,Ni were analysed,and Monomial Pollution Index(MPI)and Integrated Pollution Index(IpI)were used to evaluate the pollution situation.The results showed that the 0 ~30 cm soils were contaminated through all of the six locations seriously.The total content of Cu,Zn,Pb,Cd, Ni,ranged between 20.96 and 78.49,6.73 and 155.54,22.86 and 159.99,0.61 and 7.69,and 1 .87 and 18.99 mg /kg,respectively.All of the 72 sampling sites,Cd was the major contributors to pllution in XiHe River area,and the MPI of Cd ranged from 2.02 ~25.62,overranging environmental quality standard for con-taminated soil in China.On the whole,most IpI was much higher than 3,and increased with increasing depth.All of the 6 locations cannot be applied to farming.