神农架锶矿泉调查及成因分析

Investigation and formation analysis of strontium mineral spring in Shennongjia

目的 探明神农架林区锶矿泉的分布,为资源开发提供进一步理论依据。方法 2018年5月实地走访和查看地图资料,确定采样点,至12月共采集来自林区8个乡镇的415份水样,包括地表水、浅层地下自然涌出的泉水和深层地下矿泉水厂水源水用原子吸收光谱法进行水样含锶量检测。结果 除2份水样外,其他均清澈透明、无肉眼可见杂质。检测结果显示,26.63%的水样含锶量≥0.1 mg/L,11.13%的水样含锶量≥0.2 mg/L,这些样品主要来源于九湖和红坪镇,大致呈东西走向。地表水和浅层地下水含锶量比较,差异无统计学意义(P>0.05)。结论 神农架地表及浅层地下水含锶量均处于安全范围,含锶量较高的水样可能与地质构造有关。神农架具有形成锶矿泉的可能性,但需进一步探查进行验证。

Objective To explore the distribution of strontium mineral springs in Shennongjia Forest Region,provide theoretical basis for further development. Methods In May 2018,on-site visits and review of map data were conducted to determine sampling points,and 415 water samples from eight villages and towns in the forest district were collected from May to December,including surface water,shallow groundwater(natural gushing spring water) and deep groundwater(source water of a mineral water plant). The strontium content of water samples was determined by atomic absorption spectrometry. Results Except for two water samples,the others were all clear and transparent without visible impurities. The test results showed that 26.63% of water samples contained strontium content ≥0.1 mg/L,and 11.13% of water samples contained strontium content ≥0.2 mg/L,which is mainly distributed in Jiuhu and Hongping Town,roughly east-west direction. There was no statistically significant difference in strontium content between surface water and shallow groundwater(P>0.05). Conclusions The strontium contents of surface and shallow groundwater in Shennongjia are fall in safe limit. The water samples with high strontium content may be related to geological structures.Shennongjia has the potential to form strontium mineral springs,which needs to be verified by further exploration.