扬州市新装饰开业公共场所甲醛污染状况

Status of Formaldehyde Pollution in Public Places Newly Decorated and Entering on Business in Yangzhou

[目的 ]了解新装饰开业公共场所甲醛污染状况。 [方法 ]用甲醛分析仪对新装饰开业 2年内 4 7家公共场所室内空气甲醛浓度进行测定。 [结果 ]开业前 3个月各场所甲醛浓度全部超标 ,总超标率为 79.6% ,开业后第4～ 12个月总超标率为 2 4 .3 % ,第 13～ 2 4个月总超标率为 13 .0 %。趋势显著性检验表明 :甲醛超标率随着开业时间延长越来越低 ( P<0 .0 5 )。第 1～ 3个月和第 4～ 12个月比较 ,甲醛超标率差异显著 ( P<0 .0 1) ;第 4～ 12个月和第 13～ 2 4个月甲醛超标率比较 ,差异无显著性 ( P>0 .0 5 )。使用中央空调和使用普通空调的宾馆甲醛超标率有差异 ( P<0 .0 5 )。 [结论 ]新装饰开业公共场所甲醛污染较重 ,甲醛浓度的下降主要在新装饰开业 3个月后。使用中央空调的宾馆甲醛浓度高于使用普通空调的宾馆。

To understand the status of formaldehyde pollution in public places newly decorated and entering on business in Yangzhou The concentrations of formaldehyde in indoor air of 47 public places,newly decorated and entering on business not more than 2 years,was determined by formaldehyde analyzer The total over standard rate was 79 6% during the lst to the 3rd month after entering on business with over standard concentrations of formaldehyde in indoor air in every observed public place,24 3% during the 4th to 12th month and 13% during the 13th to the 24th month respectively The tendency significant test revealed that the over standard rates of formaldehyde in indoor air decreased with the increasing durations of entering on business ( P <0 05).The over standard rate of formaldehyde during the 4th to the 12th month after entering on business showed significant diffevences compared with that during the 1st to 3rd month ( P< 0 01),but no significant differences compared with that during the 13th to the 24th month( P <0 05) The over standard rates of formaldehyde also presented significant differences between the hotels with centralized air conditioning system and non centalized air conditioning system ( P >0 05) [Conclusion]The public places newly decorated and entering on business presented high formaldehyde pollution in indoor air The higher concentration of formaldehyde began to decrease from the 3th month after the finish of new decoration and entering on business The hotels applyng centralized air conditioning system presented higher concentrations of formaldehyde compared with those applying non centralized air conditioning system