Survey of trace metals in drinking water supplied to rural populations in the eastern Llanos of Venezuela

被引：22
|
作者：
Mora, Abrahan [1 ]
Mac-Quhae, Cesar [1 ]
Calzadilla, Malvis [1 ]
Sanchez, Luzmila [1 ]
机构：
[1] Fdn La Salle Ciencias Nat, Estac Invest Hidrobiol Guayana, Lab Fisicoquim, San Felix 8051, Estado Bolivar, Venezuela
来源：
JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2009年 / 90卷 / 02期
关键词：
Drinking water; Water quality; Metals; Eastern Llanos; Mesa formation; ACUTE MYOCARDIAL-INFARCTION; ALZHEIMERS-DISEASE; CEREBROVASCULAR-DISEASE; RISK-FACTORS; MAGNESIUM; CALCIUM; MANGANESE; ALUMINUM; COPPER; DEATH;
D O I：
10.1016/j.jenvman.2008.01.005
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
To ascertain the water quality for human consumption, chemical parameters such as pH, conductivity and total dissolved calcium, magnesium, iron, aluminum. zinc, copper and manganese were measured during four sampling periods (November 2002; March, May and July 2003) in drinking water wells which supply several forest camps and rural populations located in the eastern Llanos of Venezuela. Copper levels in drinking water in November 2002 were found to be significantly higher (P < 0.05) than the other assessed periods. Temporal variations of the other parameters considered were not statistically significant. Calcium and magnesium concentrations were found to be extremely low (mean concentration +/- S.D. of 0.27 +/- 0.25 mg/l for Ca and 0.219 +/- 0.118 for Mg) during the four sampling periods, probably because of the carbonate bearing scarcity in the soils lithic component. The rest of the metals complied with the Venezuelan and International guidelines of quality criteria for drinking water. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：752 / 759
页数：8
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