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.
ZHOU Mei li
,
YANG Zi qiu
,
YANG Wei
,
YANG Chun hua
,
FAN Xiao xu
,
LIU Ze hong
. 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
.
DOI: 10.13995/j.cnki.11-1802/ts.016781
[1] GUPTA R C. Natraceuticals: Efficacy, Safety and Toxicity[M]. Sact Lake City: Acadamic Press, 2016: 569-583.
[2] SONI R A, SUDHAKAR K, RANA R S. Spirulina-from growth to nutritional product: A review [J]. Trends in Food Science & Technology, 2017, 69:157-171.
[3] AL-HOMAIDAN A A. Heavy metal levels in Saudi Arabian Spirulina [J]. Pakistan J Biol Sci, 2006, 9(14): 2 693-2 695.
[4] AL-DHABI N A. Heavy metal analysis in commercial Spirulina products for human consumption [J]. Saudi Journal of Biological Sciences, 2013, 20(4): 383-388.
[5] KHAN N, JEONG I S, HWANG I M, et al. Analysis of minor and trace elements in milk and yogurts by inductively coupled plasma-mass spectrometry (ICP-MS) [J]. Food Chemistry, 2014, 147(4): 220-224.
[6] NARDI E P, EVANGELISTA F S, TORMEN L, et al. The use of inductively coupled plasma mass spectrometry (ICP-MS) for the determination of toxic and essential elements in different types of food samples [J]. Food Chemistry, 2009, 112(3): 727-732.
