CAJ | 학술논문

通过对河北省11个地区连续7年共14次进行地下水取样及硝酸盐含量监测,对地下水硝酸盐污染现状及时空变异规律进行分析。结果表明，2006-2012年间河北省地下水硝酸盐（以N计）平均含量变化范围在6.73~9.84 mg·L-1之间，总平均值为8.42 mg·L-1，低于美国的饮用水标准（10 mg·L-1）。河北省地下水硝酸盐平均含量呈逐年明显增加的趋势，河北省地下水硝酸盐10、20 mg·L-1超标率分别为22.34%和9.73%，地下水硝酸盐大于20 mg·L-1的Ⅳ类和ⅴ类水分布频率明显增加，由2006年的6.96%增加到2012年的10.60%，增加了3.63%。不同地区间地下水硝酸盐平均含量和各类水的分布频率均存在明显的差异。地下水硝酸盐含量的最低值出现在廊坊、衡水和沧州地区，平均含量分别为0.64、0.62 mg·L-1和0.97 mg·L-1。秦皇岛地区地下水硝酸盐的平均含量最高，为26.45 mg·L-1，是廊坊、衡水和沧州地区的27.27~42.66倍。秦皇岛地区地下水硝酸盐超标率也最大，为58.82%。衡水、沧州、廊坊地区主要以玉类水为主。保定、邢台、邯郸、石家庄和唐山等5个地区以I和Ⅲ类水为主。秦皇岛、张家口和承德等地区以Ⅲ类水为主。其中，张家口和承德地区ⅴ类水分布频率分别为15.53%和9.95%，仅次于本地区的Ⅲ类水和II类水。
통과대하북성11개지구련속7년공14차진행지하수취양급초산염함량감측,대지하수초산염오염현상급시공변이규률진행분석。결과표명，2006-2012년간하북성지하수초산염（이N계）평균함량변화범위재6.73~9.84 mg·L-1지간，총평균치위8.42 mg·L-1，저우미국적음용수표준（10 mg·L-1）。하북성지하수초산염평균함량정축년명현증가적추세，하북성지하수초산염10、20 mg·L-1초표솔분별위22.34%화9.73%，지하수초산염대우20 mg·L-1적Ⅳ류화ⅴ류수분포빈솔명현증가，유2006년적6.96%증가도2012년적10.60%，증가료3.63%。불동지구간지하수초산염평균함량화각류수적분포빈솔균존재명현적차이。지하수초산염함량적최저치출현재랑방、형수화창주지구，평균함량분별위0.64、0.62 mg·L-1화0.97 mg·L-1。진황도지구지하수초산염적평균함량최고，위26.45 mg·L-1，시랑방、형수화창주지구적27.27~42.66배。진황도지구지하수초산염초표솔야최대，위58.82%。형수、창주、랑방지구주요이옥류수위주。보정、형태、함단、석가장화당산등5개지구이I화Ⅲ류수위주。진황도、장가구화승덕등지구이Ⅲ류수위주。기중，장가구화승덕지구ⅴ류수분포빈솔분별위15.53%화9.95%，부차우본지구적Ⅲ류수화II류수。
In order to evaluate the nitrate contamination status of groundwater in Hebei Province, a largescale investigation and watersampling analysis on nitrate content in local groundwater from 11 cities was performed from 2006 to 2012, and the temporal and spatial variability of nitrate were studied. The results showed that the average nitrate content of groundwater in Hebei Province fluctuated from 6.73 mg·L-1 to 9.84 mg·L-1 during 7 years. The total average nitrate content was 8.42 mg·L-1, lower than drinking water quality criterion of the United States. The average nitrate content of underground water had an obvious increasing trend. About 22.34%samples exceeded the criterion of drinking water quality of the United States. Only about 9.73%samples exceeded the criterion of national drinking water quality. The distribution frequency of Ⅳ and ⅴ water( the samples that nitrate content was less than 20 mg·L-1)increased significantly, from 6.96%in 2006 to 10.60%in 2012, with an average increasing of 3.63%. The average content and distribution frequency of various types water had significant difference among the 11 regions. The lowest value of nitrate concentration in groundwater appeared in Langfang, Hengshui and Cangzhou regions. The highest nitrate concentration in groundwater samples was observed in Qinhuangdao region. The average nitrate content in groundwater was 26.45 mg· L-1. It was 27.27~42.66 times of that in Langfang, Hengshui and Cangzhou regions. The proportion exceeding the standard in Qinhuangdao region was the highest, 58.82%samples exceeded the criterion of national drinking water quality. Level I water mainly existed in Hengshui, Cangzhou and Langfang regions. Level I and level Ⅲ water mainly existed in Baoding, Xingtai, Handan, Shijiazhuang and Tangshan regions. Level Ⅲ water mainly dominated in Qinhuangdao, Zhangjiakou and Chengde regions. The distribution frequency of level ⅴ water in Zhangji-akou and Chengde regions were next only to level Ⅲ and level II water in each region, occupied 15.53%and 9.95%, respectively.