The results showed that the standard solution of chlorine, sequence of color-developing agent and water sample and coloration time had influences on the test results.
结果表明，不同的氯标准溶液、显色剂与水样的加入顺序和显色时间对测定的结果均有干扰。
A series of color test are carried out to determine the influence of developing result at different time after preparing the acetylacetone on formaldehyde content measuring.
文中对乙酰丙酮在配制后不同时间的应用作了一系列显色试验，以探讨试剂在不同时间显色结果对甲醛含量测试结果的定量影响。
A series of color test are carried out to determine the influence of developing result at different time after preparing the acetylacetone on formaldehyde content measuring.
文中对乙酰丙酮在配制后不同时间的应用作了一系列显色试验，以探讨试剂在不同时间显色结果对甲醛含量测试结果的定量影响。
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