SPECTROPHOTOMETRY

作品数：236被引量：270H指数：7
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Spatial Analysis on Content Distribution of Soil Heavy Metals Copper (Cu) and Cadmium (Cd) in Duanzhou District of Zhaoqing City
《Meteorological and Environmental Research》2024年第5期56-62,69,共8页Jianqiao QIN Bihai CAI Yuanyuan XU Dexin XIONG 
Fourth Batch of Innovative Research Teams from Zhaoqing University(TD202408);Quality Engineering and Teaching Reform Project of Zhaoqing University in 2024(zlgc 2024002);2024 School-level Course Ideological and Political Reform Demonstration Project of Zhaoqing University(ZHAOXUEYUAN[2024]83);Notice on the List of Projects for the Construction of Teaching Quality and Teaching Reform in Undergraduate Universities in Guangdong Province in 2021(Yue Jiao Gao Han[2021]29).
This paper used atomic absorption spectrophotometry to determine the content distribution of Cu and Cd in the soil of Duanzhou District,Zhaoqing City.The single factor index method,Nemerow comprehensive index method,p...
关键词：Atomic spectrophotometry Single factor index method Nemerow composite index method Pollution load index method 
Method Verification and Validation of Hydralazine Hydrochloride: Spectrophotometric Analysis in Pure and Pharmaceutical Formulations
《American Journal of Analytical Chemistry》2024年第7期219-228,共10页Laila Abdullah Alshatti 
The new method proposed is based on the formation of hydralazine-Bromophenol blue ion pair simply and without further extraction or heating. The ion pair was prepared in the presence of pH 3 citrate buffer forming a y...
关键词：SPECTROPHOTOMETRY Validation Hydralazine Hydrochloride International Conference on Harmonization Q2 (R1) 
Quantitative discrimination of surface adsorbed NO_(x) species on CeO_(2) via spectrophotometry for SCR denitration investigation被引量：1
《Journal of Rare Earths》2024年第6期1066-1072,I0003,共8页Songil Sin Jiawei Ji Lijun Cheng Zhiwen Gu Chong Tan Kwangchol Ri Changjin Tang 
Project supported by the National Natural Science Foundation of China(22276097,21976081);the Major Scientificand Technological Project of Bingtuan(2018AA002)。
CeO_(2)-based catalysts are widely investigated for selective catalytic reduction(SCR)of NO with NH3.Interaction of NO/O_(2) with CeO_(2) generally produces two surface species,i.e.,nitrates and nitrites.However,the e...
关键词：Quantitative evaluation Spectrophotometry analysis Nitrate species Nitrite species CeO_(2)catalyst NH_(3)-SCR 
Simplified quantitative analysis method and its application in the insitu synthesized copper-based azide chips
《Defence Technology（防务技术）》2024年第2期309-316,共8页Jie Ren Yunfeng Li Mingyu Li Xingyu Wu Jiabao Wang Qingxuan Zeng 
the financial support provided by the National Natural Science Foundation of China(Grant No.11872013).
Copper-based azide(Cu(N_(3))2 or CuN_(3),CA)chips synthesized by in-situ azide reaction and utilized in miniaturized explosive systems has become a hot research topic in recent years.However,the advantages of in-situ ...
关键词：Copper-based azide chips SPECTROPHOTOMETRY Separation method Quantitative analysis Ignition ability 
Rapid accuracy determining DNA purity and concentration in heavy oils by spectrophotometry methods被引量：1
《Petroleum Science》2023年第6期3394-3399,共6页YunYang Wan HongMei Mu Na Luo JianPing Yang Yan Tian Ning Hong HaiLiang Dong 
supported by grants from the PetroChina-CUP Major Strategic Cooperation Projects(ZLZX2020010805,ZLZX2020020405);National Natural Science Foundation of China(41373086);National Science and Technology Major Project(No.2016ZX05050011,2016ZX05040002);Beijing Nova Program and Leading Talent Culturing Cooperative Projects(No.Z161100004916033);Beijing Higher Education Young Elite Teacher Project(No.YETP0670);Outstanding Young Excellent Teachers Foundation of China University of Petroleum(Beijing)(KYJJ2012-01-10).
DNA analysis is the core of biotechnology applied in petroleum resources and engineering. Traditionally accurate determination of DNA purity and concentration by spectrometer is the first and critical step for downstr...
关键词：Heavy oil DNA concentration DNA purity SPECTROPHOTOMETRY qPCR 
Semiconductor Multilayer Nanometrology with Machine Learning被引量：2
《Nanomanufacturing and Metrology》2023年第2期37-54,共18页Hyunsoo Kwak Jungwon Kim 
Funding National Research Foundation of Korea(Grants 2021R1A2B5B03001407 and 2021R1A5A1032937).
We review the measurement methods and thickness characterization algorithms of semiconductor multilayer devices.Today’s ultrahigh-density,high-energy-efficient three-dimensional semiconductor devices require an itera...
关键词：Semiconductor multilayer devices Electron microscopy SPECTROPHOTOMETRY Spectroscopic ellipsometry Raman spectroscopy Thickness characterization Machine learning 
A Comparative Analysis of Caffeine Extraction Efficiency from Different Tea Varieties and Its Effect on Human Physiology: A Spectrophotometric Investigation
《American Journal of Analytical Chemistry》2023年第3期134-148,共15页Umaima Gazal 
The current work imitates the trivial method which intricates the abstraction along with classification of caffeine accessible in variability of decoction shrubberies which are expended in two different states of Indi...
关键词：CAFFEINE Tea Shrubberies SEPARATION Health Impacts SPECTROPHOTOMETRY 
Effect of Light Intensity and pH on Cell Density Assessed by Spectrophotometry for the Unicellular Algae Chlorella vulgaris被引量：1
《American Journal of Plant Sciences》2023年第4期472-481,共10页Nishat Tasnim Debabrata Karmakar Rakibul Hasan Rashadul Islam Saddam Hossain Aftab Ali Shaikh Rezaul Karim 
In this study, an effective environment for Chlorella vulgaris growth is sought after. As a substitute source of food and feed, increasing the cell density of Chlorella culture is one of the keys to ensuring sustainab...
关键词：Chlorella vulgaris Light Intensity PH Cell Density 
Comparison between Spectrophotometry and Gas Phase Molecular Absorption Spectrometry for Determination of Nitrite Nitrogen in Flue Gas
《Meteorological and Environmental Research》2022年第6期60-62,共3页Jun SUN Tianjun DU Hualin GONG 
Spectrophotometry and gas phase molecular absorption spectrometry for determination of nitrite nitrogen in flue gas were compared.KOH absorption solution was used to absorb nitrite nitrogen in flue gas,and the concent...
关键词：SPECTROPHOTOMETRY Gas phase molecular absorption spectrometry Flue gas Nitrite nitrogen COMPARISON 
Aquaphotomics determination of nutrient biomarker for spectrophotometric parameterization of crop growth primary macronutrients using genetic programming被引量：1
《Information Processing in Agriculture》2022年第4期497-513,共17页Ronnie Concepcion II Sandy Lauguico Jonnel Alejandrino Elmer Dadios Edwin Sybingco Argel Bandala 
Water quality assessment is currently based on time-consuming and costly laboratory pro-cedures and numerous expensive physicochemical sensors deployment.In response to the trend of device minimization and reduced out...
关键词：Aquaphotomics Genetic programming Plant nutrients Physicochemical composition SPECTROPHOTOMETRY Water quality monitoring 
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