Speciation of sewage derived phosphorus in coastal sediments from Rio de Janeiro, Brazil

被引:32
作者
Carreira, RS
Wagener, ADLR [1 ]
机构
[1] Pontif Catholic Univ Rio de Janeiro, Dept Chem, BR-22453 Rio De Janeiro, Brazil
[2] Rio de Janeiro State Univ, Dept Oceanog, BR-20550 Rio De Janeiro, Brazil
关键词
phosphorus speciation; organic carbon; outfall; sewage; coastal zone; Brazil;
D O I
10.1016/S0025-326X(98)00062-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Phosphorus speciation was performed in sediments and waters from an area of 20 km(2) under the influence of untreated sewage released via a submarine outfall. Results showed that the pool of organic and non-apatite P made up the major fraction of sewage derived P.A good correlation between P-napat and Fe-DBC indicated that sorption on iron oxides is an important mechanism for removal of P to the sediments. Mass balances revealed that most of the sewage derived P had been exported from the observation area but, in spite of this, concentrations of labile forms of P reaching 1900 mu g P g(-1) were amongst the highest reported for polluted estuarine sediments. The supply over 20 yr of high nutrient loads would have been sufficient to produce 500 000 t of fixed carbon, of which 2% lies presently in the sediments of the surveyed area, (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:818 / 827
页数:10
相关论文
共 37 条
[1]  
ANGLEJAN, 1985, CHEM GEOLOGY, V48, P257
[2]  
[Anonymous], BIOAVAILABILITY PHYS
[3]   SEMIAUTOMATED METHOD FOR DETERMINATION OF INORGANIC, ORGANIC AND TOTAL PHOSPHATE IN SEDIMENTS [J].
ASPILA, KI ;
AGEMIAN, H ;
CHAU, ASY .
ANALYST, 1976, 101 (1200) :187-197
[4]  
BASCOM W, 1982, ENVIRON SCI TECHNOL, V16, pA226, DOI 10.1021/es00098a724
[5]  
BURKE A J, 1990, Chemical Speciation and Bioavailability, V2, P50
[6]   POTENTIALLY BIOAVAILABLE PHOSPHORUS IN SEDIMENTS OF THE WESER ESTUARY [J].
CALMANO, W .
ENVIRONMENTAL TECHNOLOGY LETTERS, 1981, 2 (10) :443-448
[7]  
CARREIRA R, 1994, THESIS PONTIFICAL CA
[8]  
CARREIRA R, 1996, 1 INT C POLL PROC CO
[9]  
CHIAUDANI G, 1980, PROG WATER TECHNOL, V12, P185
[10]   AN APPROACH TO MONITORING SEWAGE OUTFALLS - A CASE-STUDY ON THE SYDNEY DEEP-WATER SEWAGE OUTFALLS [J].
FAGAN, P ;
MISKIEWICZ, AG ;
TATE, PM .
MARINE POLLUTION BULLETIN, 1992, 25 (5-8) :172-180