3.4. Quantitative analysis in CRM
To check the accuracy of the proposed method for K and Mg
quantitative measurement, three different plant CRMs were
analyzed. The use of spiked wood as a calibrating standard allows
quantitative measurement, even in the absence of an internal
standard (Table 4). When filter paper or babassu mesocarp was
used as calibrating standard, a recovery of 63–89% and 39–63%
were observed for K and Mg, respectively. However, when C
was used as internal standard, the recovery was improved to
86–106% for K and 78–100% for Mg, indicating these calibrating
materials could be used for direct K and Mg measurement in
plant samples.
3.4. Quantitative analysis in CRMTo check the accuracy of the proposed method for K and Mgquantitative measurement, three different plant CRMs wereanalyzed. The use of spiked wood as a calibrating standard allowsquantitative measurement, even in the absence of an internalstandard (Table 4). When filter paper or babassu mesocarp wasused as calibrating standard, a recovery of 63–89% and 39–63%were observed for K and Mg, respectively. However, when Cwas used as internal standard, the recovery was improved to86–106% for K and 78–100% for Mg, indicating these calibratingmaterials could be used for direct K and Mg measurement inplant samples.
การแปล กรุณารอสักครู่..
