黄海西部大气湿沉降(降水)中各元素沉降通量的初步研究  

WET DEPOSITION (PRECIPITATION) OF MAJOR ELEMENTS AT TWO SITES OF NORTHWESTERN YELLOW SEA

作　　者：于志刚[1] 张经[1] 陈宁 张金良[1] 

机构地区：[1]青岛海洋大学化学化工学院,青岛266003 [2]青岛市环境监测中心,青岛266003

出　　处：《环境化学》2000年第4期352-356,共5页Environmental Chemistry

基　　金：国家自然科学基金(No.49576297和No.49736190)资助项目

摘　　要：本文对黄海西部的千里岩、青岛的麦岛降水(雨+雪)中的H^+,NH_4^+,K^+,Na^+,Ca^2+,Mg^(2+),F^-,Cl^-,NO_3^-,SO_4~2-,SiO_3^(2-),PO_4^(3-)进行了测定.计算了除H^+以外其他离子的湿沉降通量.1998年千里岩N,P,Si的湿沉降通量分别为:DIN([NH_4^-]十[NO_3^-])0.611g.m^(-2)·a^(-1),P0.002g·m^(-2)·a^(-1),Si0.078g·m^(-2),a^(-1),麦岛N,P,Si的湿沉降通量分别为:DIN 0.776g·m^(-2).a^(-1),P0.008g·m^(-2)·a^(-1),Si0.060g·m^(-2)·a^(-1)千里岩降水的N/P比(摩尔比)为727,远高于海水中的Redfield比值(16),将对该海域的营养盐结构产生一定的影响.对于忽略小于0.7mm的降水对湿沉降通量所可能产生的误差进行了估算,发现几种主要离子均小于9%.Totally, 79 precipitation samples were collected at Qianliyan island and Maidao in 1998, and analyzed to determine the concentration for 12 major ions (H+ , NH+4 , K+ , Na+ , Ca2+ , Mg2+ , F- , Cl- , NO-3 , SO2-4, SiO2-3 , PO3-4), and the wet deposition of 11 major ions except H+ was calculated. Theobservation is that the wet deposition was 0.611g·m-2·a-1 for N, 0.002g·m-2·a-1 for P, 0.078g·m-2·a-1 for Si at Qianliyan in 1998 and for N, P, Si is 0.776, 0.008, 0.060g· m-2· a-1 at Maidao, respectively.The ratio of N/P in mole in precipitation of Qianliyan was 727, mucn higher than the ratio of Redfield (16) in seawater, this will effect the nutrient structure in this area of Yellow sea. The estimated errors of some importantions in precipitation of less than 0.7mm were less than 9% .

关 键 词：黄海 营养元素 湿沉降通量 N/P比 降水 海水监测 

分 类 号：X51[环境科学与工程—环境工程]