Abstract: The content of elements (lead, cadmium) in Spirulina was determined using inductively coupled plasma mass spectrometry (ICP-MS). Ultrasonic extraction and water bath oscillation extraction were compared by microwave digestion as a possible alternative to conventional pretreatment methods. The three methods were evaluated by comparing the accuracy, detection limit, repeatability, recovery, processing time, the reagent consumption, et al. Analytical results of the three methods showed a good agreement, were found to have satisfactory accuracy and precision. The content of lead and cadmium in national standard material (GBW10020, GBW10047) were in the ranges of reference values by the three methods. Compared with traditional microwave digestion, ultrasonic extraction and water bath oscillation extraction were found to have lower detection limits, are characterized by covenient procedure, less processing time, less reagent consumption, energysaving, and environmentally friendly. Ultrasonic extraction and water bath oscillation extraction are suitable for the rapid determination of lead and cadmium in Spirulina.
周美丽,杨子秋,杨伟,等. 3种前处理方法在电感耦合等离子体质谱测定螺旋藻中铅、镉含量的比较[J]. 食品与发酵工业, 2018, 44(12): 256-260.
ZHOU Mei li,YANG Zi qiu,YANG Wei,et al. Comparison of the different preparation methods for determination of lead and cadmium in Spirulina by inductively coupled plasma mass spectrometry[J]. Food and Fermentation Industries, 2018, 44(12): 256-260.
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