Analysis and health risk assessment of sulfur dioxide content in different sources of lycium barbarum in Ningxia
Objective To determine the content of sulfur dioxide(SO2)in lycium barbarum in farmland and supermarkets and its risk difference to consumers.Methods The sulfur dioxide content was determined by atomic fluorescence spectrophotometer based on the principle that sulfite,ammonium salt and phthalalde-hyde formed fluorescent substances under neutral or weakly acidic conditions.Hazard quotient method was used to calculate the possible health risks of SO2 in lycium barbarum.Results Sulfur dioxide was detected in 43.75％and 80.00％of the samples from farmland and supermarkets,respectively,but the content of all sam-ples were lower than the standard of the 2020 edition of the Chinese Pharmacopoeia.The content of sulfur di-oxide in lycium barbarum from two sources was significantly different(P＜0.05).The average health risk of SO2 from lycium barbarum in farmland and supermarket were 1.86×10-4 and 1.06×10-3,respectively,with no significant health risk to consumers.Conclusion There are significant differences in the content of sulfur dioxide between farmland and supermarket,and the health risks caused by SO2 are also different,but the con-tent and risk value of SO2 are acceptable in general.
万方数据
维普
