Nitrate temporal and spatial patterns in 12 water-supply wells, Yucatan, Mexico

被引：74

作者：

Pacheco, J

Marín, L

Cabrera, A

Steinich, B

Escolero, O

机构：

[1] Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico

[2] UADY, Fac Ingn, Merida 97111, Yucatan, Mexico

[3] Univ Nacl Autonoma Mexico, Inst Geofis, Unidad Ciencias Tierra, Queretaro, Mexico

来源：

ENVIRONMENTAL GEOLOGY | 2001年 / 40卷 / 06期

关键词：

agricultural practices; groundwater contamination; karst; nitrate;

D O I：

10.1007/s002540000180

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The nitrate concentration in 12 water-supply wells were monitored for the period April 1992 to March 1993. Each water-supply well was sampled once a month. The nitrate concentrations in the 12 wells ranged from 7 to 156 mg/l. Two water-supply wells (Chacsinkin and Peto) showed concentrations that reached 3.5 times the maximum permissible limit for the Drinking Water Standard (45 mg/l). A third water-supply well (Akil) exceeds the norm for 7 out of 12 months. The use of nitrogen-rich fertilizers are responsible for high nitrate concentrations in groundwater in the southern part of Yucatan, Mexico where intensive agricultural practices exist.

引用

页码：708 / 715

页数：8

共 38 条

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