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首页> 外文会议>The Fifth International Conference on Waste Management and Technology. >Determination of Acid Volatile Sulfides and Simultaneously Extracted Metals in Sediments from Hongfeng Lake
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Determination of Acid Volatile Sulfides and Simultaneously Extracted Metals in Sediments from Hongfeng Lake

机译：洪峰湖沉积物中酸性挥发性硫化物及同时提取金属的测定

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摘要

Acid volatile sulfides (AVS) and simultaneously extracted metals (SEM) of eleven surface sediment samples, which collected in sediments from Hongfeng Lake in Guiyang, were determined in order to assess potential toxicity posed by the heavy metals. The AVS and SEM concentrations were analyzed and the SEM/AVS ratios were calculated. The results were as follows: The AVS concentration in sediments ranged from 65.12 to 189.45 μmol·g-1 (dry weight) with the mean value of 123.25 μmol·g-1 and variation coefficient of 37.68%. The SEM concentration ranged from 2.250 to 9.833 μmol·g-1 (dry weight) with the mean value of 4.182 μmol·g-1 and the variation coefficient of 51.08%. The SEM/AVS ratios ranged from 0.012 to 0.084 with the mean value of 0.039. Judging from the SEM/AVS ratios which were all far below 1.0, the bioavailability of these heavy metals in sediments were low to the aquatic organisms presently.
机译：测定了11种表面沉积物样品中的酸挥发性硫化物（AVS）和同时提取的金属（SEM），这些样品是从贵阳洪峰湖沉积物中收集的，目的是评估重金属的潜在毒性。分析了AVS和SEM浓度，并计算了SEM / AVS比。结果表明：沉积物中的AVS浓度范围为65.12〜189.45μmol·g-1（干重），平均值为123.25μmol·g-1，变异系数为37.68％。 SEM浓度为2.250〜9.833μmol·g-1（干重），平均值为4.182μmol·g-1，变异系数为51.08％。 SEM / AVS比范围为0.012至0.084，平均值为0.039。从均远低于1.0的SEM / AVS比率判断，目前沉积物中这些重金属对水生生物的生物利用度较低。

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