A groundwater quality survey of an unsewered, semi‐rural area
A groundwater quality survey of an unsewered, semi‐rural area
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对无下水道的半农村地区的地下水质量调查
DOI：
10.1080/00288330.1982.9515975
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发表时间：
1982
影响因子：
1.6
通讯作者：
L. Sinton
中科院分区：
文献类型：
--
作者：
L. Sinton
1976年9月至12月，对克赖斯特彻奇附近Yaldhurst一个未排水地区的120口家庭水井进行了基线地下水水质调查。所有样品的氨氮水平均低于检测限（0.02 g m‐3）。硝酸盐- N、电导率和氯化物水平往往随着井深和井位的不同而变化，在较深的井和位于浅石质土壤区域的井中，硝酸盐- N、电导率和氯化物水平较低。大约33%的水井含有大肠菌群、粪便大肠菌群或粪便链球菌。1977年1月至8月，每两周对25口井进行取样。从1月到6月，平均硝态氮和电导率水平分别稳定在1.5 g m‐3和11.2 mS m‐1左右。7月至8月，这些水平分别增加到3.3 g m - 3和15.8 mS m - 1，与地下水位上升相对应。进入耶尔德赫斯特含水层的大部分硝酸盐可能来自土壤的淋滤损失，化粪池系统的贡献…
Abstract A baseline groundwater quality survey of 120 household wells in an unsewered area at Yaldhurst, near Christchurch, was carried out between September and December, 1976. Ammonia‐N levels were below the detection limit (0.02 g m‐3) in all samples. Nitrate‐N, conductivity, and chloride levels tended to vary according to well depth and location, being lower in the deeper wells and in wells located in an area of shallow, stony soils. Approximately 33% of the wells contained coliform bacteria, faecal coliform bacteria or faecal streptococci. A subset of 25 wells was sampled fortnightly from January to August 1977. From January to June, mean nitrate‐N and conductivity levels remained stable at approximately 1.5 g m‐3 and 11.2 mS m‐1 respectively. An increase in these levels to 3.3 g m‐3 and 15.8 mS m‐1 in July‐August corresponded with a rise in the water table. Leaching losses from soils probably accounted for most of the nitrate entering the Yaldhurst aquifers, the contribution by septic tank systems b...