CAJ | 학술논문

利用磷的连续分级提取方法,研究了黄河中下游16个沉积物样品中磷的赋存形态分布特征,并探讨了沉积物中磷的生物有效性.结果表明,黄河沉积物中总磷的含量为83.79～132.35 μg·g~(-1),其中主要以无机磷的形式存在,而无机麟中以钙结合态磷为主.线性回归分析结果表明,NaOH-P的含量与活性态Fe、BD-P,NaOH-P含量的总和与活性态Fe、BD-P,NH_4Cl-P含量的总和与活性态Fe、Al含量总和,均有一定的线性关系;沉积物中的总无机磷含量与沉积物的总有机质含量呈正相关关系.磷的生物有效性分析结果显示,潜在的生物有效性磷主要包括弱结合态磷、氧化还原敏感态磷、金属(水台)氧化物结合态磷3种赋存形态,黄河沉积物中潜在的生物有效性磷含量在9.02～37.20 μg·g~(-1)范围内,平均值为24.47 μg·g~(-1),平均占沉积物总磷的22.43%、占总无机磷的35.59%.
이용린적련속분급제취방법,연구료황하중하유16개침적물양품중린적부존형태분포특정,병탐토료침적물중린적생물유효성.결과표명,황하침적물중총린적함량위83.79～132.35 μg·g~(-1),기중주요이무궤린적형식존재,이무궤린중이개결합태린위주.선성회귀분석결과표명,NaOH-P적함량여활성태Fe、BD-P,NaOH-P함량적총화여활성태Fe、BD-P,NH_4Cl-P함량적총화여활성태Fe、Al함량총화,균유일정적선성관계;침적물중적총무궤린함량여침적물적총유궤질함량정정상관관계.린적생물유효성분석결과현시,잠재적생물유효성린주요포괄약결합태린、양화환원민감태린、금속(수태)양화물결합태린3충부존형태,황하침적물중잠재적생물유효성린함량재9.02～37.20 μg·g~(-1)범위내,평균치위24.47 μg·g~(-1),평균점침적물총린적22.43%、점총무궤린적35.59%.
Species and bio-availability in the sediments from middle and lower reaches of Yellow River were investigated using se-quential extraction method. It was shown that total phosphorus in sediments varied from 83.79～132.35 μg·g~(-1) and was mainly in the form of inorganic phosphorus dominated by HCl-P. The linear relationship between the NaOH-P and active Fe, the sum of BD-P and NaOH-P and active Fe, the sum of BD-P and NH_4Cl-P and the sum of active Fe and Al was observed within the sixteen sediments. Also, the concentrations of IP were linearly correlated with the TOC. Moreover, the bio-available phosphorus (BAP) included NH_4Cl-P, BD-P and NaOH-P and was ranging from 9.02～37.20μg·g~(-1) and average 24.47 μg·g~(-1) for all sediment samples. The con-tribution of BAP to total (TP) and inorganic sedimentary phosphorus (IP) were 22.43% and 35.59% on average, respectively.