The production of organic solid waste is increasing as the development of society. However, the investment of waste incineration power plant is very high and the thermal efficiency is very low. At the same time, the load of coal-fired power plant is suppressed due to the carbon neutralization policy. Therefore, using the existed coalfired power plant to co -process the organic solid waste is a feasible method. In this paper, a coal-fired power plant indirect coupling with waste incineration technology based on flue gas circulation was proposed and studied on a 100 kW pilot -test bench. In this technology, the polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) was reduced by a three stages controlling method, which adopts the blending of multi -source organic wastes, high -temperature decomposition and selective catalytic reduction (SCR) catalyst decomposition, simultaneously. The effects of waste incineration coupling, replacement ratio of coal, and flue gas circulation on the combustion and pollutant emission characteristics of the system were studied. The experimental results indicate that the waste incineration coupling has minor influence on the temperature distribution and the toxicity of fly ash of the coal-fired furnace. The NO, HCl, and PCDD/Fs concentrations of flue gas of coal-fired furnace generally decrease as the replacement ratio of coal increases, while the SO 2 concentration increases. With the help of three stages controlling method or the flue gas circulation, the PCDDFs concentration of the flue gas of coal-fired furnace can be much lower than 0.1 TEQ ng/Nm 3 .

Nicotiana tabacum leaves are mainly used in the production of cigarettes and cigars all over the world, and a large amount of waste materials will be produced in the process. High-value scopoletin can be extracted and separated from waste materials, but there are some problems, such as low purity of products and inability of large-scale production. In this study, we established an efficient and stable method for producing high-purity scopoletin from waste tobacco by containing acetone reflux extracting with dynamic axial compression-high performance liquid chromatography (DAC-HPLC) separating. In particular, the extraction system makes the scopoletin fully extracted through continuous reflux, the DAC-HPLC system makes the high-purity scopoletin repeatedly obtained, and the DAC-HPLC system was first used for scopoletin. Finally, related to the waste tobacco power, the yield of scopoletin is 1.9

A biosurfactant assisted mechanical amorphous dispersion extraction (BA-MADE) was established for simultaneous capture of hydrophilic phenolic acids and hydrophobic tanshinones from Salvia miltiorrhiza . Single-factor experiments and response surface methodology were used to optimize and analyze the crucial parameters considered for the method, such as the type and amount of solid-dispersion extractants, grinding time, extraction time and solid-to-liquid ratio. The optimized parameters of BA-MADE process were: 407.02 mg of sodium chenodeoxycholate amount, 4.87 min of grinding time, 4.92 min of extraction time, and 0.5:10 g/mL of solid-to-liquid ratio. The calibration curves of danshensu, rosmarinic acid, lithospermic acid, salvianolic acid B, salvianolic acid A, dihydrotanshinone I, cryptotanshinone, tanshinone I, tanshinone IIA exhibited good linearity in the range of 1-500 μg/mL (R 2 ≥ 0.9990). The limits of detection of nine analytes ranged from 5.46 to 129.83 ng/mL, the relative standard deviations (RSD) of intraday and inter-day precision were less than 1.95 and 3.56%, respectively, and the recoveries of real sample were in the range of 87-113%, with RSD% below 3.21%. The BA-MADE method was compared with the previous methods such as heating reflux extraction, ultrasonic extraction and microwave assisted micellar extraction, and the results demonstrated that the developed method has significant advantages in the simultaneous extraction of the hydrophilic and hydrophobic active components in Salvia miltiorrhiza .

快速准确检测烟叶水分值对烟叶复烤具有重要意义.针对复烤企业下属复烤厂比较分散,在应用近红外分析技术时,不方便进行近红外模型管理维护和数据的一致性要求,提出将各复烤厂相关数据进行整合,建立统一的近红外模型,建模过程中采用K-S方法挑选样品,优化后模型的RMSECV和RMSEP分别为0.33和0.34,R2由原来的0.73提高至0.84,模型相关性得到改善.结果表明:文章所用方法建立统一模型检测准确度满足实际生产要求,K-S方法能有效改善样品分布情况,保持建模样品具有代表性,同时还能压缩建模光谱数据库的作用,方法可以推广到其他集团化企业的近红外建模中.

The fatty acid compositions of 10 categories of traditional breakfast food were analyzed using gas chromatography.Results showed that the trans fatty acid contents of most samples were lower,except beef baozi,roasted bun,Deep-fried dough sticks,pumpkin pies,fried noodles with shredded meat,pure milk and fast milk.The trans fatty acid contents in these samples were higher than 2% of total fatty acids.In addition,eggs contained higher percentage of monounsaturated fatty acids( 41.46% ~56.50%),soy-bean milk contained higher percentage of polyunsaturated fatty acids( 57.48% % ~58.97%).Some conjugated linoleic acids and branch chain fatty acids could be determined in pure milk. Generally,the distribution of saturated,monounsaturated and polyunsaturated fatty acids of breakfast with higher content of carbohydrate was reasonable,the ratio of them was among the 1∶1~1.5∶1,which was recommended by nutrition committee and national organization.

A sensitive and reliable ultra-high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UHPLC-MS/MS) method was developed and validated for the simultaneous determination of four active components of Semen Cassiae extract (aurantio-obtusin, chrysoobtusin, obtusin and 1-desmethylobtusin) in rat plasma after oral administration. Chromatographic separation was achieved on an Agilent Poroshell 120 C18 column with gradient elution using a mobile phase that consisted of acetonitrile-ammonium acetate in water (30 mm) at a flow rate of 0.4 mL/min. Detection was performed by a triple-quadrupole tandem mass spectrometer in multiple reaction monitoring mode. The calibration curve was linear over a range of 3.24-1296 ng/mL for aurantio-obtusin, 0.77-618 ng/mL for chrysoobtusin, 34.55-1818 ng/mL for obtusin and 1.86-1485 ng/mL for 1-desmethylobtusin. Inter- and intra-day assay variation was <15%. All analytes were shown to be stable during all sample storage and analysis procedures.

This is a report about the identification of key metabolites of tectorigenin in rat urine using high-performance liquid chromatography-electrospray ionization ion trap tandem mass spectrometric method (HPLC-ESI-MS(n)). Six healthy rats were administered a single dose (80 mg/kg) of tectorigenin by oral gavage. Urine was sampled for 0-24 h and centrifuged at 12,000 rpm for 10 min to obtain the supernatants, then the supernatants were purified by solid-phase extraction with a C(18) cartridge. The chromatographic separation was carried out on a reversed-phase C(18) column with a gradient elution program whereas acetonitrile-0.1% formic acid water was used as mobile phase. Mass spectra were acquired in negative ionization mode and a data-dependant scan was used for the identification of the key metabolites of tectorigenin in the urine samples. As a result, four phase II metabolites and the parent drug tectorigenin were found and identified in rat urine for the first time.