ABSTRACT
Gardenia has been widely used in clinical practice and with a long history. In order to make better use of gardenia resources，this study summarized historical literatures and modern researches，made textual research on the name，variety，origin，processing and efficacy of Gardenia jasminoides，and found that the name of G. jasminoides mainly reflects the characteristics of G. jasminoides based on form and color to a certain extent. In some cases, the name "Huangzhi" was mixed with water G. jasminoides. The earliest origin of G.jasminoides was Nanyang as recorded in ancient literatures, but with a low yield. Due to the influence of population migration and productivity development，the main origin of G. jasminoides moved to the south，and southern producers were preferred. G. jasminoides was recorded as G. jasminoides, and Gardeniae Fructus could not be used as medicine in literatures of Chinese materia medica，but there were records of "Fat G.jasminoides" and "Great G. jasminoides" as medicines in ancient books of treatment for febrile diseases. The reason for the difference with the literature records of this herb lay in different eras of "Leigong Bombardment Theory" and "Treatise on Febrile Diseases". There were gaps in the yield and harvesting capacity of G.jasminoides，and the herbaceous book was highly standardized， the highest-quality herbs were selected to be used as medicine，and the formularies focused on practicality. According to modern experimental studies，chemical composition and content of Gardeniae Fructus and Gardeniae Fructus were similar with the same choleretic effect. In addition，the processing history and efficacy application of G. jasminoides were also summarized，in order to provide reference for the further study and utilization of G. resources.
ABSTRACT
<p><b>OBJECTIVE</b>To establish a gas chromatography method for detecting the concentration of 1,1-dichloro-1-nitroethane in air of workplaces.</p><p><b>METHOD</b>1,1-dichloro-1-nitroethane in air of workplaces was collected by activated charcoal tube, absorbed using carbon disulfide and analyzed by Gas Chromatography (FID) with FFAP capillary column.</p><p><b>RESULTS</b>The linear rang of 1,1-dichloro-1-nitroethane in this method was 4.0-858.2 microg/ml, the linear regression formula was Y = 283X-1076, the correlation coefficient was 0.9999, the lowest detection concentration was 0.4 mg/m3 (3L sampling air), the relative standard deviation (RSD) was 1.8%-4.1%, the desorption efficiency was 88.5%-90.6%, the breakthrough volume was > 0.7 mg, the sampling efficiency was 100%, the samples could be kept at ambient temperature for at least 7 days.</p><p><b>CONCLUSION</b>The indicators of this method were conformed to the requirements of "Guide for establishing occupational health standards--Determination methods of air chemicals in workplace". This method could be used to detect 1,1-dichloro-1-nitroethane in air of workplaces.</p>