珠江口海域沉积物中总氮总磷的空间分布特征  

Spatial Distribution and Pollution Status of Total Nitrogen and Total Phosphorus in Sediments of Pearl River Estuary and Its Adjacent Area

作　　者：刘太胜 姜沄林 陆尧 邓瀚锵 赵蒙蒙 Liu Taisheng;Jiang Yunlin;Lu Yao;Deng Hanqiang;Zhao Mengmeng(Experimental Animal Center Guangdong Pharmaceutical University,Guangzhou 510006;South China Institute of Environmental Sciences,Ministry of Ecology and Environment of the People's Republic of China,Guangzhou 510535,China)

机构地区：[1]广东药科大学实验动物中心,广东广州510006 [2]生态环境部华南环境科学研究所,广东广州510535

出　　处：《广东化工》2021年第16期148-149,共2页Guangdong Chemical Industry

基　　金：中央级公益性科研院所基本科研项目PM-zx703-201904-128,PM-zx703-201904-126,PM-zx703-202002-037。

摘　　要：随着珠江三角洲经济的快速发展,各类废水排放量不断增加,导致珠江口及邻近海域呈现不同程度的污染。为了解珠江口及其邻近海域沉积物中氮、磷污染程度和水生生态环境的现状,采集了珠江口及其临近海域13个站位(珠江主干流入海口8个站位和渡头河入海口5个站位)的表层沉积物样品,研究了珠江口及其邻近海域表层沉积物中的总氮总磷含量以及其空间分布特征。研究结果表明珠江口及其临近海域表层沉积物总氮浓度范围为0.27~0.81 mg/g,均值为0.53 mg/g。珠江主干流入海口一侧污染相对较为严重,表层沉积物中总氮含量均值为0.70 mg/g,显著高于渡头河支流入海口一侧。表层沉积物中总磷浓度为0.28~0.96 mg/g,均值为0.49 mg/g,各位点浓度差异较大,整体并未达到污染程度。珠江口沉积物总氮总磷含量并无相关性,氮污染程度高于磷污染程度。研究结果为全面评价广东近海海水生态健康状况以及管理保护提供科学依据。The wastewater discharge has been increasing in the past several decades with the rapid development of economy in the Pearl River Delta of China, which results different degrees of pollution in the Pearl River Estuary and its adjacent area. In order to understand the pollution status of nitrogen and phosphorus and aquatic ecology and environment in the Pearl River Estuary, surface sediment samples were collected from 13 stations(8 stations located at the main entrance of Pearl River Estuary and the other 5 at the Dutouhe entrance) in Pearl River Estuary and its adjacent area, and the concentrations and temporal distribution of total nitrogen and total phosphorus in marine sediments were characterized. The results show that the total nitrogen concentration ranged from 0.27 mg/g to 0.81 mg/g, with an average of 0.53 mg/g in the sediments of the Pearl River Estuary and its adjacent area. The pollution on the side of the main entrance of Pearl River flowing into the estuary is relatively serious, with an average of 0.70 mg/g, which was significantly higher than that on the side of Dutouhe entrance. The total phosphorus concentration ranged from 0.28 mg/g to 0.96 mg/g, with an average concentration of 0.49 mg/g. The concentration of total phosphorus at each site varied greatly and did not reach the pollution level. There was no correlation between the total nitrogen and the total phosphorus, and the nitrogen pollution was higher than phosphorus pollution. The results provide a scientific basis for the comprehensive evaluation of the ecological health status and management and protection of Guangdong coastal waters.

关 键 词：珠江口 沉积物 总氮 总磷 分布 污染 

分 类 号：TQ[化学工程]