人民黄河
人民黃河
인민황하
Yellow River
2015年
10期
81-85
,共5页
冯精兰%栗笑迎%刘群%刘梦琳%孙剑辉
馮精蘭%慄笑迎%劉群%劉夢琳%孫劍輝
풍정란%률소영%류군%류몽림%손검휘
重金属%沉积物%生态风险%淮河上游%分布特征
重金屬%沉積物%生態風險%淮河上遊%分佈特徵
중금속%침적물%생태풍험%회하상유%분포특정
heavy metals%sediments%ecological risk%upper reaches of Huaihe River%distribution characteristics
为了解淮河上游沉积物中重金属的含量及潜在生态危害程度,用电感耦合等离子质谱法和电感耦合等离子发射光谱法测定了16个采样点沉积物中Cu、Cr、Zn、Cd、Pb等5种重金属元素的含量,对沉积物中重金属元素的污染状况和潜在生态危害进行了评价。与河南省土壤重金属元素地球化学背景值相比,Cd富集最严重,其次为Pb;相关分析及主成分分析表明,淮河上游沉积物中Zn、Cu和Cr主要来源于岩石的自然风化与侵蚀过程,Cd主要来源于工业排污、化石燃料的燃烧以及农业活动,上述两种来源对Pb均有影响;地积累指数及潜在生态危害评价结果表明,部分采样点Cd的污染程度达到中等和强生态危害水平,应予以重视。
為瞭解淮河上遊沉積物中重金屬的含量及潛在生態危害程度,用電感耦閤等離子質譜法和電感耦閤等離子髮射光譜法測定瞭16箇採樣點沉積物中Cu、Cr、Zn、Cd、Pb等5種重金屬元素的含量,對沉積物中重金屬元素的汙染狀況和潛在生態危害進行瞭評價。與河南省土壤重金屬元素地毬化學揹景值相比,Cd富集最嚴重,其次為Pb;相關分析及主成分分析錶明,淮河上遊沉積物中Zn、Cu和Cr主要來源于巖石的自然風化與侵蝕過程,Cd主要來源于工業排汙、化石燃料的燃燒以及農業活動,上述兩種來源對Pb均有影響;地積纍指數及潛在生態危害評價結果錶明,部分採樣點Cd的汙染程度達到中等和彊生態危害水平,應予以重視。
위료해회하상유침적물중중금속적함량급잠재생태위해정도,용전감우합등리자질보법화전감우합등리자발사광보법측정료16개채양점침적물중Cu、Cr、Zn、Cd、Pb등5충중금속원소적함량,대침적물중중금속원소적오염상황화잠재생태위해진행료평개。여하남성토양중금속원소지구화학배경치상비,Cd부집최엄중,기차위Pb;상관분석급주성분분석표명,회하상유침적물중Zn、Cu화Cr주요래원우암석적자연풍화여침식과정,Cd주요래원우공업배오、화석연료적연소이급농업활동,상술량충래원대Pb균유영향;지적루지수급잠재생태위해평개결과표명,부분채양점Cd적오염정도체도중등화강생태위해수평,응여이중시。
In order to understand the contamination level and ecological risk of heavy metals in surface sediments from the upper reaches of Huaihe River,Cu,Cr,Zn,Cd and Pb in 16 sediment samples were measured by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrometer (ICP-OES ). Compared with the background value of soil from Henan Province,Cd was enriched to some extent and followed by Pb. The potential source of heavy metals in sediments from the upper reaches of Huaihe River was identified by correlation analysis and principal component analysis. The results show that Zn,Cu and Cr mainly originate from natural weathering and erosion process;Cd mainly originates from human activities including industry,traffic and usage of fertilizer;both processes have influence on the content of Pb. The geo-accumulation index (Igeo )and the Hakanson potential ecological risk index indicate that Cd pollution is the most serious among all heavy metals in sediments from the upper reaches of Huaihe River.