CAJ | 학술논문

石油产品色度测定通常采用目测比色法和比色计法，但是直接目视观测主观性较强，准确度和灵敏度都较低，并且要定期更换比色片或比色液，步骤繁琐.文中研究了一种采用普通分光光度计就能对石油产品色度进行测定的新方法，即分光光度法.该方法通过配制25种标准比色液，然后做出标准曲线，寻找合适吸收波长，然后选用合适的比色皿，使得吸光度落在0.1~1.0之间，建立了不同波长下的吸光度和色度的关系表，可以通过查表直接得到石油产品色度值，也可以通过拟合的曲线公式计算出色度值.分光光度法不仅提高了测定色度的准确度和灵敏度，同时操作简单可以长期使用.
석유산품색도측정통상채용목측비색법화비색계법，단시직접목시관측주관성교강，준학도화령민도도교저，병차요정기경환비색편혹비색액，보취번쇄.문중연구료일충채용보통분광광도계취능대석유산품색도진행측정적신방법，즉분광광도법.해방법통과배제25충표준비색액，연후주출표준곡선，심조합괄흡수파장，연후선용합괄적비색명，사득흡광도락재0.1~1.0지간，건립료불동파장하적흡광도화색도적관계표，가이통과사표직접득도석유산품색도치，야가이통과의합적곡선공식계산출색도치.분광광도법불부제고료측정색도적준학도화령민도，동시조작간단가이장기사용.
Visual method and colorimetric method are generally used for oil chroma. But direct visual observation is subjective and of low accuracy and sensitivity. Changing color film or color solution frequently is tedious. In this article a new method taking on a conventional spectrophotometer for measuring the chroma of petroleum products, namely Spectrophotometry, is introduced. By preparing 25 kinds of standard color solution are prepared; a standard curve is worked out; and a suitable absorption wavelength is found, then an appropriate cuvette is chosen to make the absorbance fall between 0.1 and 1.0. The relational table of the absorbance of different wavelengths and color is set. Oil chroma values can be obtained directly from the table. It also can be calculated by curve fitting equation. The spectrophotometry not only improves the accuracy and sensitivity of the chroma, but also can be used for a long-term with simple operation.