论文部分内容阅读
目的调查2008~2011年常州游泳场所水质(包括泳池水质和浸脚池水质)的总体情况并进行原因分析;寻找出需重点关注的泳池水质指标。方法对常州市2008~2011年游泳场所水质监测结果进行回顾性分析。结果连续4年泳池水总合格率为15.8%,4年合格率分别为8.3%、22.0%、13.4%、27.8%,各年合格率经检验,差异有统计学意义(χ2=8.680,P=0.034﹤0.05)。浸脚池水样4年总合格率为13.6%。不同监测项目4年总合格率经检验差异有统计学意义(χ2=235.211,P=0.000),分别为:浊度97.5%、pH 97.5%、大肠菌群90.4%、细菌总数75.8%、尿素53.3%、游离性余氯34.6%。经检验,游离性余氯3个浓度组细菌总数合格率差异有统计学意义χ2=33.128,P=0.000,余氯浓度﹤0.3 mg/L组合格率最低,为57.1%。游离性余氯0.3~0.5 mg/L组及﹥0.5 mg/L经检验,细菌总数合格率差异无统计学意义(χ2=3.354,P=0.067﹥0.05)。游离性余氯与细菌总数两者存在显著负相关关系,相关系数r=-0.179,P=0.005。结论 2008~2011年常州游泳场所水质合格率总体较低,情况不容乐观;在6项监测指标中,需重点关注细菌总数、尿素、游离性余氯情况。
Objective To investigate the general situation of water quality (including the swimming pool water quality and immersion pond water quality) of Changzhou swimming site from 2008 to 2011 and analyze the causes; and to find out the swimming pool water quality indicators to be focused on. Methods The results of water quality monitoring of swimming places in Changzhou from 2008 to 2011 were analyzed retrospectively. Results The total passing rate of swimming pool water for consecutive 4 years was 15.8%. The pass rates in 4 years were 8.3%, 22.0%, 13.4% and 27.8%, respectively. The passing rates of each year were significantly different (χ2 = 8.680, P = 0.034 <0.05). Four-year immersion pool water sample total pass rate of 13.6%. The total qualified rate of 4 years in different monitoring projects was statistically significant (χ2 = 235.211, P = 0.000), respectively: turbidity 97.5%, pH 97.5%, coliform bacteria 90.4%, total bacteria 75.8%, urea 53.3 %, Free residual chlorine 34.6%. After testing, the free residual chlorine concentration of three groups the total qualified rate of bacteria was statistically significant χ2 = 33.128, P = 0.000, the residual chlorine concentration <0.3 mg / L group the lowest rate of 57.1%. Free residual chlorine 0.3 ~ 0.5 mg / L group and> 0.5 mg / L tested, the total number of bacteria passing rate was no significant difference (χ2 = 3.354, P = 0.067> 0.05). Free residual chlorine and the total number of bacteria there is a significant negative correlation between the correlation coefficient r = -0.179, P = 0.005. Conclusion The passing rate of water quality in Changzhou swimming pool was generally low from 2008 to 2011, and the situation was not optimistic. Of the six monitoring indicators, the total number of bacteria, urea and free residual chlorine should be focused on.