Classification Of Samples For Tds

885 Words Aug 6th, 2015 4 Pages
Classification of samples for TDS
Prior to the sample analysis, 841 samples were collected from selling agricultural, animal, and aquatic products, and their processed form in markets of nine major cities were classified with nonfat liquid, nonfat solid, fat liquid, fat solid, lipoprotein liquid and alcoholic liquid following the matrix and figuration using food and nutrient data system of the ministry food and drug safety. The classified results are listed in table 1.

Method validation
The analytical method of 3-MCPD and 1,3-DCP was validated using linearity, limit of detection (LOD), and limit of quantification (LOQ). The LOD and LOQ was determined by the Equations LOD = 3.14 * σ and LOQ = 10 * σ, where σ is the standard deviation of the specific sample spiked standard solution. Moreover, the accuracy and precision (inter, intra-day) for the samples were determined.
The method validation results for the 3-MCPD analytical method were evaluated as follow. The LODs of 3-MCPD in various matrices ranged from 4.18 to 10.56 ng g-1. Moreover, the accuracy and precision were found to be ~90.38–122.46%, ~1.89–25.22% relative standard deviation (RSD), respectively. In contrast, the LODs of 1,3-DCP following matrices were found to be the ~1.06–3.15 ng g-1. The accuracy and precision were determined as ~91.24–113.40 and ~1.42–10.58% RSD. Meanwhile, all the3-MCPD and 1,3-DCP calibration curves in diverse matrices have higher linearity than 0.99.

Determination of 3-MCPD and…
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