The LDL of medthod were 0.02 ~ 0.07 mg / kg and LOQ were 0.068 ~ 0.23 mg / kg .
实验室间最低检测限和定量限为0.02~0.07mg/kg和0.068~0.23mg/kg。
Compared with solution extraction , the established method had the advantages of lower LOD and LOQ , and was more stable and precise .
该法与溶剂萃取法相比具有检出限和检测限低,稳定性高,测定更准确的优势。
Residues of oxolinic acid and flumequine were detected with HPLC-MS. Limits of detection ( LOD ) and limits of quantitation ( LOQ ) of this method were 1ng / ml and 5ng / ml , respectively .
By method validation , this method showed good linearity , repeatability , specificity , low limits of detection ( LOD ) and quantification ( LOQ ), and short analytical time . ( 2 ) Screening targeted strains .
The LC-MS / MS methods for determining the concentration of SBT in rat plasma and in Beagle dog plasma were established using terbutaline as internal standard with LOQ of 0.10 ng / ml and 0.05ng / ml , respectively .
The repeatability of the analytes ( expressed as a relative standard deviation , RSD ) for simulant sample is : < 0.2 % for retention time and < 5 % for peak area , the total recovery 99.2 % , and LOQ ( limit of quantitative ) less than 0.5mg/kg .
Methyl mercaptan concentration has good linear response in the range of 0.16-33.00 mg / m3.The correlation coefficient ( r2 ) averaged 0.994 . The LOD and LOQ were 0.20mg/m3 and 0.66mg/m3.The recovery ranged 84.90 % - 107.10 % . Conclusion The method has high sensitivity and accuracy for the rapid qualitative and quantitative determination of trichloroethylene , vinyl chloride , and methyl mercaptan in the chemical poisoning field .
This paper presented the detail parameters of LC and MS / MS on the determination of TSNAs and the performance of this method such as LOQ , recovery rate , precision level and the quantitative calibration curve . Data of the TSNAs contents of 44 brands in the market was also listed .