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我们于1994年6～7月对锦州市煤气公司炼焦装置空气中苯溶物浓度进行测定，共调查8个岗位，采集空气样品48个，用重量法分析测定。测定结果苯溶物浓度超过对照区数十倍至数百倍，秩和检验有非常显著意义（PMO．of）。通过调查表明该厂每个岗位都已受到不同程序的污染，特别是炼
We measured the concentration of benzene in the air of coking plant of Jinzhou Gas Company from June to July 1994. We surveyed 8 posts and collected 48 air samples for determination by gravimetric analysis. Determination results benzene solution concentration than the control area several times to several hundred times, rank sum test is very significant (PMO.of). Through the survey shows that the plant every post has been subject to different procedures of pollution, especially refining