【摘要】 用偏最小二乘法（ＰＬＳ）的计算光度法同时测定了原油和渣油中的微量铁、镍、钒，对测定波长选择问题和抽象组分数的确定方法进行了研究。对模拟石油中铁、镍、钒含量制成的合成样进行了回收实验。结果表明，在铁、镍、钒加入量为０．４～１０μｇ／２５ｍＬ时，其回收率为９４％～１０３％，优于用多元线性回归法的测定结果。更多还原

【Abstract】 A method for simultaneous determination of iron, nickel and vanadium in crude oil and residual oil with PLS (partial least squares)-computative spectrophotometry is described.The selection of wavelength and method for determining the component number are studied.The experimental results show that the recovery is 94% ￣ 103% when the added contents of iron,nickel and vanadium are in the range of 0. 4￣ 10 μg/25 mL. The result determined using PLS method is better than that of multiple linear regression (MLR) method.更多还原