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ICP-AES法测定番茄酱中Ca、Cu、Fe、Zn、Mn、K、Al、Sr、P等9个元素 总被引:4,自引:0,他引:4
本文采用ICP-AES法对新疆地区出口番茄酱中Ca,Cu,Fe,Zn,Mn,K,Al,Sr,P等九个元素进行了同时测定,根据仪器的特点,最大限度地避开了干扰及合理地扣除了光谱背景,改变了以往原子吸收法测定时的繁琐,费时情况,本法的准确度,精密度,回收率(92.5% ̄104.1%)均达到满意结果。 相似文献
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We developed a novel computerized approach based on lag-k autocorrelation coefficients (LCCs) and linear models (LMs) to estimate the concentration of lycopene in foods by the spectroscopy. The LCCs were calculated using the data obtained using whole visible scans from 400 to 600 nm (vide supra) of lycopene standards and food samples (ketchup, tomato juice and tomato sauce). The chaotic parameter (CP) was then transferred into a LM to estimate the concentration of lycopene compound. The integrated LCC/visible spectroscopy method developed can be considered as a satisfactory analytical technique able to estimate lycopene concentration in food samples in a fast accurate way, with a mean prediction error lower than 5.7% and a mean correlation coefficient higher than 0.957. 相似文献
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