原文由 dengkk(dengkk) 发表:
Use 2 ml of leaching solution for each square centimeter of sample. Heat the solution to 60℃and, maintaining at that temperature, leave for 30 minutes. If the sample is intended for use at temperatures above 100℃and the leaching solution used is 4% acetic acid or heptane, maintain the 4% acetic acid at 95℃ for 30 minutes or the heptane at 25℃ for 1 hour.
按这个标准的意思,似乎是使用温度在100℃以下时为60℃0.5h,100℃以上时为25℃1h,但是正庚烷极易挥发,60℃下很快就挥干了。
还是说标准表达不清,正庚烷都应该是25℃1h?