This experiment verifies the method of inductively coupled plasma emission spectroscopy (ICP-OES) for the determination of aluminum, barium, beryllium, boron, calcium, chromium, copper, iron, magnesium, zinc, lithium,...This experiment verifies the method of inductively coupled plasma emission spectroscopy (ICP-OES) for the determination of aluminum, barium, beryllium, boron, calcium, chromium, copper, iron, magnesium, zinc, lithium, manganese, molybdenum, nickel, potassium, cobalt, silicon, silver, sodium, vanadium and strontium in mineral water to confirm whether the laboratory has the ability to prepare the method. The calibration curve, fixed limit, precision and recovery were measured. The results show that the quantitative limit of all elements is less than that of 11.1 ICP-EAS in the National Standard Test Method for Drinking Natural Mineral Water for Food Safety (GB 8538-2016), the correlation coefficient of calibration curve is above 0.9996, the precision is between 0.1% and 9.5%, and the recovery rate is between 83% and 106%, which meets the requirements of the guidelines for validation and verification of chemical analysis methods for conformity assessment (GB/T 27417-2017) and confirms that the laboratory has the ability to carry out this method.展开更多
文摘This experiment verifies the method of inductively coupled plasma emission spectroscopy (ICP-OES) for the determination of aluminum, barium, beryllium, boron, calcium, chromium, copper, iron, magnesium, zinc, lithium, manganese, molybdenum, nickel, potassium, cobalt, silicon, silver, sodium, vanadium and strontium in mineral water to confirm whether the laboratory has the ability to prepare the method. The calibration curve, fixed limit, precision and recovery were measured. The results show that the quantitative limit of all elements is less than that of 11.1 ICP-EAS in the National Standard Test Method for Drinking Natural Mineral Water for Food Safety (GB 8538-2016), the correlation coefficient of calibration curve is above 0.9996, the precision is between 0.1% and 9.5%, and the recovery rate is between 83% and 106%, which meets the requirements of the guidelines for validation and verification of chemical analysis methods for conformity assessment (GB/T 27417-2017) and confirms that the laboratory has the ability to carry out this method.
