检测时间和保存方式对饮用水源水中粪大肠菌群测定的影响

研究了检测时间、保存方式和分析方法对饮用水源水中粪大肠菌群检测结果的影响。通过在不同季节采集样品,采取常温保存、冷藏保存、不同的检测时间间隔和不同的检测方法4种处理方式,对粪大肠菌群检测结果进行差异性分析。结果表明:在冬季,检测时间和保存方式对粪大肠菌群检测结果的影响不明显,不具有统计学意义(P>0.05);在夏季,检测时间和保存方式对粪大肠菌群检测结果影响极显著(P<0.001),其差异性在取样0.5 h后即显现出来。无论是在冬季,还是在夏季,不同检测方法之间的差异都无统计学意义(P>0.05)。

To study the influence of detection time,preservation method and analysis methods on the results of the fecal coliforms test in raw water.The study had been done by sampling in different seasons,taking four different treatment:normal temperature preservation,refrigeration preservation,different detection time intervals and different detection methods to analyze the difference of the test result of the fecal coliforms at last.It is found that detection time and preservation method had no significant effect on the results of fecal coliforms test in winter(P>0.05),while in summer,that effect was extremely significant(P<0.001)and showed up even in 0.5 h after sampling.Whether in winter or summer,there was no significant effect among different analysis methods(P>0.05).