All pesticides standards including
α-BHC(100 mg L
−1),
β-BHC (100 mg L
−1), γ-BHC (100 mg L
−1),
δ-BHC (100 mg L
−1),
p,p′-DDE (100 mg L
−1),
o,p′-DDT (100 mg L
−1),
p,p′-DDT (100 mg L
−1),
p,p′-DDD (100 mg L
−1),
azoxystrobin (99.0%),
carbendazim (99.0%), chlorothalonil (98.9%),
chlorpyrifos (99.5%),
cypermethrin (98.2%),
chlorantraniliprole (98.2%), dichlorvos (99.7%),
difenoconazole (99.2%),
fenpropathrin (98.9%),
isocarbophos (98.9%), procymidone (99.5%),
prochloraz (99.2%),
pyraclostrobin (98.1%),
thiophanate-methyl (99.3%),
tebuconazole (99.5%) and λ-cyhalothrin (93.5%) were purchased from Dr Ehrenstorfer GmbH (Augsburg, Germany). Acetonitrile (HPLC grade) were provided by Bangyi Chemical Co., Ltd. (Hangzhou, China). Anhydrous magnesium sulphate, anhydrous sodium sulphate and
n-hexane were of analytical grade.
Primary secondary amine (PSA) was provided by Agela Technologies.
Each single element stock solution (1000 mg L
−1) of Cu, Zn, Cr, Ni, Pb, As, Cd, and Hg were purchased from National Standard Material Research Centre (Beijing, China). Guaranteed reagent nitric acid (HNO
3) was provided by Fanhong Trading Co., Ltd. (Guangzhou, China).
Zhang Z., Song J., Zhang H., Zheng Z., Li T., Wu S., He B., Mao B., Yu Y, & Fang H. (2022). Analysis method development and health risk assessment of pesticide and heavy metal residues in Dendrobium Candidum. RSC Advances, 12(11), 6869-6875.