红枫湖沉积物和消落带土壤磷形态分布的研究
|
摘要
应用SMT法对红枫湖水库库区沉积物与消落带土壤中总磷(TP)、无机磷(IP)、有机磷(OP)、铁/铝磷(Fe/Al-P)、钙磷(Ca-P)等5种形态磷进行测定,并分析其分布特征。结果表明,消落带土壤中TP含量在330.3 mg/kg~933.6 mg/kg之间,平均含量为559.5 mg/kg,而沉积物中TP含量在630.2 mg/kg~2 074.5 mg/kg之间,平均含量为1 380.4 mg/kg,远高于消落带样品总磷含量,表明进入水库水体中的污染物大部分经过迁移沉积于水库沉积物中。在沉积物与消落带土壤中,各种形态P表现出不同的分布特点:沉积物中IP/TP(约82.6%)高于消落带土壤(约67.7%);沉积物中IP主要为Fe/Al-P(约59.0%),Ca-P占IP比例为40.1%;消落带土壤Fe/Al-P占IP约63.0%,Ca-P占IP约33.4%;沉积物中活性磷(OP+Fe/Al-P)平均含量约923.8 mg/kg,占TP约67.4%,而消落带土壤活性磷组分(OP+Fe/Al-P)平均含量约421.8 mg/kg,占TP平均比例为75.6%。
Total phosphorus(TP),inorganic-phosphorus(IP),organic-phosphorus(OP),Fe/Al-bound phosphorus(Fe/Al-P)and Ca-bound phosphorus(Ca-P)in sediments and soils of water-level-fluctuating zone of Hongfeng Reservoir were measured with the standard measurement and test procedure.Distribution of phosphorus species were analyzed.The results indicated that the TP content in soils of water-level-fluctuating zone varied 156.3 mg/kg-659.3 mg/kg with a average value of 559.5 mg/kg.In contrast,the TP content in sediments varied 630.2 mg/kg-2 074.5 mg/kg with a average value of 1 380.4 mg/kg,much higher that TP in the water-level-fluctuating zone.Therefore,it was demonstrated that the pollutants in the reservoir were transported and deposited in the reservoir sediments.Meanwhile,distribution characteristics of phosphorus species were different in the sediment and soil of water-level-fluctuating zones.The ratio of IP/TP in the sediments(average value of 82.6%)was higher than that in soils of water-level-fluctuating zone(average value of 67.7%);the ratio of Fe/Al-P/IP was 59.0%,and the ratio of Ca-P/IP was 40.1%in the sediments,whereas they are 63.0%and33.4%respectively in the soils of water-level-fluctuating zone.The average content of active phosphorus(OP+Fe/Al-P)in sediment was 923.8 mg/kg,the average ratio of active phosphorus in TP was 67.4%,whereas they are 421.8 mg/kg and 75.6%respectively in soils of water-level-fluctuating zone.
Total phosphorus(TP),inorganic-phosphorus(IP),organic-phosphorus(OP),Fe/Al-bound phosphorus(Fe/Al-P)and Ca-bound phosphorus(Ca-P)in sediments and soils of water-level-fluctuating zone of Hongfeng Reservoir were measured with the standard measurement and test procedure.Distribution of phosphorus species were analyzed.The results indicated that the TP content in soils of water-level-fluctuating zone varied 156.3 mg/kg-659.3 mg/kg with a average value of 559.5 mg/kg.In contrast,the TP content in sediments varied 630.2 mg/kg-2 074.5 mg/kg with a average value of 1 380.4 mg/kg,much higher that TP in the water-level-fluctuating zone.Therefore,it was demonstrated that the pollutants in the reservoir were transported and deposited in the reservoir sediments.Meanwhile,distribution characteristics of phosphorus species were different in the sediment and soil of water-level-fluctuating zones.The ratio of IP/TP in the sediments(average value of 82.6%)was higher than that in soils of water-level-fluctuating zone(average value of 67.7%);the ratio of Fe/Al-P/IP was 59.0%,and the ratio of Ca-P/IP was 40.1%in the sediments,whereas they are 63.0%and33.4%respectively in the soils of water-level-fluctuating zone.The average content of active phosphorus(OP+Fe/Al-P)in sediment was 923.8 mg/kg,the average ratio of active phosphorus in TP was 67.4%,whereas they are 421.8 mg/kg and 75.6%respectively in soils of water-level-fluctuating zone.
引文
[1]向速林,周文斌,聂发辉.鄱阳湖沉积物间隙水中磷的含量及其分布特征[J].湖泊科学,2011,23(6):868-872.
[2]汪艳雯,岳钦艳,刘庆,等.山东省南四湖底泥中磷的形态分布特征[J].中国环境科学,2009,29(2):125-129.
[3]王雨春,万国江,王仕禄,等.红枫湖、百花湖沉积物中磷的存在形态研究[J].矿物学报,2000,20(3):273-278.
[4]王敬富,陈敬安,曾艳,等.贵州红枫湖沉积物磷赋存形态的空间变化特征[J].湖泊科学,2012,24(5):789-796.
[5]张润宇,王立英.红枫湖后午沉积物磷形态与生物有效磷的垂向分布及疏浚深度推算[J].地球与环境,2012,40(4):554-560.
[6]杨秀珍,秦樊鑫,吴迪,等.p H对红枫湖表层沉积物吸附与释放磷的影响[J].贵州农业科学,2013,41(3):146-148.
[7]邓河霞,夏品华,陈文生,等.红枫湖流域消落带及其沉积物营养盐含量的分布特征[J].武汉工程大学学报,2014,36(12):27-33.
[8]张红,陈敬安,王敬富,等.贵州红枫湖底泥磷释放的模拟实验研究[J].地球与环境,2015,43(2):243-251.
[9]RUBAN V,BRIGAULT S,DEMARE D.An investigation of the origin and mobility of phosphorus in freshwater sediments from Bort-Les-Orgues Reservoir,France[J].Journal of Environmental Monitoring Jem,1999(1):403-407.
[10]夏品华,李秋华.红枫湖·百花湖入库河流水环境状况及生态修复措施[J].安徽农业科学,2011,39(12):7344-7346.
[11]张志永,万成炎,胡红青,等.三峡水库干流沉积物及消落带土壤磷形态及其分布特征[J/OL].环境科学[2018-03-26].http://kns.cnki.net/kcms/detail/11.1895.X.20180326.1315.022.html.DOI:10.13227/j.hjkx.201711148.
[12]李强,尹俊华,席北斗,等.巢湖入湖河流沉积物中有机磷的形态分级研究[J].环境工程学报,2014,8(2):441-447.
[13]徐德星,秦延文,张雷,等.三峡入库河流大宁河回水区沉积物和消落带土壤磷形态及其分布特征研究[J].环境科学,2009,30(5):1337-1344.
[14]李北罡,刘培怡.黄河上游沉积物中磷的存在形态及生物可利用性[J].农业环境科学学报,2012,31(1):185-191.
[15]RUBAN V,LóPEZ-SáNCHEZ J F,PARDO P,et al.Harmonized protocol and certified reference material for the determination of extractable contents of phosphorus in freshwater sediments:a synthesis of recent works[J].Fresenius Journal Anal Chemistry,2001,370:224-228.
[16]王敬富,陈敬安,孙清清,等.底泥疏浚对阿哈水库内源污染的影响[J].环境工程,2018,36(3):69-73,147.
[2]汪艳雯,岳钦艳,刘庆,等.山东省南四湖底泥中磷的形态分布特征[J].中国环境科学,2009,29(2):125-129.
[3]王雨春,万国江,王仕禄,等.红枫湖、百花湖沉积物中磷的存在形态研究[J].矿物学报,2000,20(3):273-278.
[4]王敬富,陈敬安,曾艳,等.贵州红枫湖沉积物磷赋存形态的空间变化特征[J].湖泊科学,2012,24(5):789-796.
[5]张润宇,王立英.红枫湖后午沉积物磷形态与生物有效磷的垂向分布及疏浚深度推算[J].地球与环境,2012,40(4):554-560.
[6]杨秀珍,秦樊鑫,吴迪,等.p H对红枫湖表层沉积物吸附与释放磷的影响[J].贵州农业科学,2013,41(3):146-148.
[7]邓河霞,夏品华,陈文生,等.红枫湖流域消落带及其沉积物营养盐含量的分布特征[J].武汉工程大学学报,2014,36(12):27-33.
[8]张红,陈敬安,王敬富,等.贵州红枫湖底泥磷释放的模拟实验研究[J].地球与环境,2015,43(2):243-251.
[9]RUBAN V,BRIGAULT S,DEMARE D.An investigation of the origin and mobility of phosphorus in freshwater sediments from Bort-Les-Orgues Reservoir,France[J].Journal of Environmental Monitoring Jem,1999(1):403-407.
[10]夏品华,李秋华.红枫湖·百花湖入库河流水环境状况及生态修复措施[J].安徽农业科学,2011,39(12):7344-7346.
[11]张志永,万成炎,胡红青,等.三峡水库干流沉积物及消落带土壤磷形态及其分布特征[J/OL].环境科学[2018-03-26].http://kns.cnki.net/kcms/detail/11.1895.X.20180326.1315.022.html.DOI:10.13227/j.hjkx.201711148.
[12]李强,尹俊华,席北斗,等.巢湖入湖河流沉积物中有机磷的形态分级研究[J].环境工程学报,2014,8(2):441-447.
[13]徐德星,秦延文,张雷,等.三峡入库河流大宁河回水区沉积物和消落带土壤磷形态及其分布特征研究[J].环境科学,2009,30(5):1337-1344.
[14]李北罡,刘培怡.黄河上游沉积物中磷的存在形态及生物可利用性[J].农业环境科学学报,2012,31(1):185-191.
[15]RUBAN V,LóPEZ-SáNCHEZ J F,PARDO P,et al.Harmonized protocol and certified reference material for the determination of extractable contents of phosphorus in freshwater sediments:a synthesis of recent works[J].Fresenius Journal Anal Chemistry,2001,370:224-228.
[16]王敬富,陈敬安,孙清清,等.底泥疏浚对阿哈水库内源污染的影响[J].环境工程,2018,36(3):69-73,147.