Techniques In October 2019, hydrazine floating around was adsorbed by acid silica solution tube sampling and desorped making use of sulfuric acid solution. After derivatization with furfural and extraction, the information of hydrazine was based on DM-FFAP capillary column fuel chromatography with fire ionization detector. Outcomes The linear regression equation had been y=353.8x+21.2 (r=0.9998) between 0.1-2.0 μg/ml of target concentration. The recognition limit ended up being immunogenicity Mitigation 0.030 μg/ml. The lower limitation of measurement had been 0.100 μg/ml. If 15 L environment test had been gathered, the minimum recognition concentration had been 0.004 mg/m(3) while the minimal quantitative concentration had been 0.013 mg/m(3) correspondingly. The common desorption performance ended up being 86.5%-89.4%. The data recovery ended up being 94.4%-97.1%. The general standard deviation ended up being 1.6%-4.9%. Hydrazine and furfural derivative had been 2-furaldehyde hydrazine. Conclusion The method has actually symmetrical maximum shape of hydrazine types chromatographic peaks, brief evaluation time, effortless procedure, and it is appropriate the determination for the concentration of hydrazine in the air on the job.Objective To establish a technique for the dedication of chlorothalonil in air by purification membrane sampling, solvent elution and gasoline chromatography. Techniques PTFE filter had been utilized for sampling, eluted with dichloromethane, divided by DB-5 capillary line, and decided by FID. Outcomes The standard curve had been useful for quantitative detection, while the correlation of chlorothalonil when you look at the number of 15 μg/ml-300 μg/ml, R(2)=0.9999. The recognition limitation for this strategy was 1.70 μg/ml therefore the lower quantitative restriction had been 5.70 μg/ml. The minimum detected concentration ended up being 0.045 mg/m(3) (75L air test ended up being gathered) . The data recovery price was 90.14%-91.81%. The accuracy of the same batch had been 1.5%-1.8%, and that of different batches ended up being 2.3%-3.8%. The sampling efficiency can attain above 95%; The samples may be kept for two weeks at room-temperature. Conclusion The outcomes reveal that the strategy of filtration membrane sampling-solvent elude-gas chromatography works for the dedication of chlorothalonil when you look at the air.Objective To analyse the clinical qualities of mercury-toxic nephrotic syndrome also to get the danger facets. Methods A total of 126 customers with mercury-toxic admitted to Beijing Chaoyang Hospital from January 2017 to January 2020 were selected because the study targets. General data such as age, sex, mercury publicity reputation for all patients and laboratory information such as learn more urine mercury and urine creatinine were collected. The clinical manifestations and pathological forms of clients with mercury-toxic nephrotic syndrome had been reviewed, as well as the threat aspects of mercury-toxic nephrotic problem had been discovered by univariate and multivariate logistic regression evaluation. Results on the list of 24 clients with mercury-toxic nephrotic syndrome, 1 ended up being poisoned by respiratory system, 6 were poisoned by intestinal tract, and 17 were poisoned by epidermis absorption. Aside from the manifestations of renal injury, a few of the clients additionally revealed neurologic symptoms such as for example dizziness, fatigue, hand tremor, and limb pain. The main pathological types had been membranous nephropathy (9 instances) and micropathological nephropathy (10 cases) . The outcome of multivariate logistic regression analysis showed that the digestive system and epidermis absorption pathways of mercury were risk factors for mercury-toxic nephrotic syndrome (OR=21.099, 23.840, P less then 0.05) . Conclusion The absorption pathway of mercury features an essential impact on the pathogenesis of mercury-toxic nephrotic syndrome, especially in clients with mercury poisoning absorbed by the epidermis and digestive tract, the risk of complicating nephrotic problem is greater.Objective to research the associated factors impacting the data recovery of cholinesterase (ChE) activity in clients with acute chlorpyrifos poisoning. Methods In February 2020, the clinical data of intense chlorpyrifos poisoning patients admitted within our hospital from January 2016 to December 2019 had been retrospectively examined. The outcome variable was the full time of ChE task restored to 50% reduced restriction of regular price, and multivariate linear regression analysis had been done to explore its influencing factors. Outcomes an overall total of 78 clients, 43 men and 35 females, with a typical age (39.58±14.77) many years were signed up for this research. The common time of serum ChE task restored to 50% reduced restriction of typical price was (24.45±2.64) times. There clearly was a correlation between hemoperfusion (r=-0.644) , atropine quantity (r=0.498) , chlorophosphorus quantity (r=0.432) and also the period of serum ChE task recovered to 50% lower limit of regular worth, in which hemoperfusion was notably negatively correlated utilizing the time of serum ChE task restored to 50% lower Falsified medicine limit of typical value (β=-4.222, P less then 0.05) . Conclusion The recovery of serum ChE task in customers with intense chlorpyrifos poisoning is extremely slow. Hemoperfusion can quickly eliminate chlorpyrifos, its metabolites and inflammatory mediators when you look at the bloodstream, hence effectively advertising the recovery of ChE activity.Objective To comprehend the present circumstance, law and characteristics of pesticide poisoning in Tianjin, and provide medical basis for the formulation of pesticide poisoning control strategy.