Determination of iron in lettuce by wet digestion visible spectrophotometry
LIU Bo-wen, WANG Huan, WU Yu, XIONG Bo, LIU Xiao-xia
HUBEI AGRICULTURAL SCIENCES . 2022, (24): 140 -143 .  DOI: 10.14088/j.cnki.issn0439-8114.2022.24.030