The build-in low-pressure monolithic column combined with hydride generation atomic fluorescence spectrometry ( HG-AFS ) was employed for speciation analysis of fish meat. The sample pretreatment and separation approach could be accomplished within 30 min. The proper amount of fish sample was weighed and smashed into puree. The extraction solution composed of 10% HCl, 1% thiourea, and 0. 15% KCl was added before loaded into the automatic temperature controlled vertex system with 2000 r/min. The sample solution was separated through Merck monolithic column, with 3% ( V/V) acetonitrile, 30 mmol/L amonium acetate and 0. 03%(V/V) 2-mercaptoethanol (2-ME) as the eluent. The after-column eluent was digested by novel UV digestion device with pipeline sintered into the lamp, and then detected by hydrid-generation AFS. The rapid LC separation enabled fast mercury speciation of fish sample within 10 min. The different UV lamp digestion effects, eluent components, carrier gas, shield gas, lamp current, as well as PMT working power was optimized. Under the optimal conditions, the robust system achieved detection limits (DL) of 0. 15 μg/L and 0. 14 μg/L for methylmercury and HgⅡ, respectively. The RSD (n=7) was less than 5%, the linear correlation coefficient was 0 . 999 , and the matrix spiked recovery was in the range of 85%-110% for Hg speciation. This method was used for the determination of Hg speciation in fish and soil samples, and was proofed to be a reliable, easy approach for daily inspection.

ObjectiveTo systematically evaluate the efficacy and safety of integrated traditional Chinese and western medicine in the treatment of chronic liver failure（CLF）. MethodSeveral databases was searched from the establishment date of these databases to January， 2023， including China National Knowledge Infrastructure（CNKI）， WanFang Data Knowledge Service Platform（WanFang）， China Biomedical Literature Database（CBM）， VIP Chinese Science and Technology Journal Database（VIP）， Cochrane Library， Embase and PubMed. The randomized controlled trial（RCT） conforming to the treatment of CLF with integrated traditional Chinese and western medicine were screened and included， the control group was treated with basic western medicine， and the test group was treated with traditional Chinese medicine on the basis of western medicine. Then， the Cochrane risk bias assessment tool was used to evaluate the quality of the included literature， and Meta analysis was performed by RevMan 5.3 software. ResultEleven literatures with a total of 1 110 patients were included， and Meta analysis showed that the integrated traditional Chinese and western medicine was better than western medicine alone in the treatment of patients with CLF in improving the overall effective rate［relative risk（RR）=1.36， 95% confidence interval（CI） （1.27， 1.46）， P<0.000 01］， reducing the mortality［RR=0.35， 95% CI（0.23， 0.53）， P<0.000 01）］， reducing alanine aminotransferase（ALT） level［mean difference（MD）=-38.73， 95% CI（-54.59， -22.87）， P<0.000 01］， reducing the aspartate aminotransferase（AST） level［MD=-58.16， 95% CI（-83.45， -32.79）， P<0.000 01］ and reducing the total bilirubin（TBil） level［MD=-69.21， 95% CI（-94.15， -30.53）， P<0.000 01］， promoting serum albumin（ALB） level［MD=3.24， 95% CI（0.82， 5.66）， P=0.009］ and prothrombin activity（PTA） level［MD=5.44， 95% CI（3.38， 7.50）， P<0.000 01］， and improving the traditional Chinese medicine（TCM） symptom score［MD=-4.28， 95% CI（-8.39， -0.17）， P=0.04］. ConclusionThe treatment of CLF with integrated traditional Chinese and western medicine has good clinical efficacy and safety. However， due to the limitations of the quality and quantity of the included literature， the above conclusions still need to be verified by larger scale of high-quality RCT， which is worthy of further expansion of the study.