Feasibility of pyrohydrolysis and extended-steam distillation method for the extraction of two halides from zinc and lead concentrate samples followed by ion chromatography analysis

2020 ◽  
Vol 159 ◽  
pp. 105593
Author(s):  
Nadeem Muhammad ◽  
Yun Zhang ◽  
Muhammad Asif ◽  
Muhammad Farooq Saleem Khan ◽  
Azeem Intisar ◽  
...  
BioResources ◽  
2007 ◽  
Vol 2 (2) ◽  
pp. 265-269 ◽  
Author(s):  
M. Hakki Alma ◽  
Murat Ertaş ◽  
Siegfrie Nitz ◽  
Hubert Kollmannsberger

In this study, clove bud oil, which was cultivated in the Mediterranean region of Turkey, was provided from a private essential oil company in Turkey. Essential oil from clove (Syzygium aromaticum L.) was obtained from steam-distillation method, and its chemical composition was analyzed by GC and GC-MS. The results showed that the essential oils mainly contained about 87.00% eugenol, 8.01% eugenyl acetate and 3.56% β-Caryophyllene. The chemical composition of the Turkish clove bud oil was comparable to those of trees naturally grown in their native regions.


2010 ◽  
Vol 23 (1) ◽  
pp. 45-53
Author(s):  
Jung-Suk Kim ◽  
Chang-Hun Lee ◽  
Soon-Dal Park ◽  
Sun-Ho Han ◽  
Kyu-Seok Song

2019 ◽  
Vol 2019 (1) ◽  
pp. 000369-000372
Author(s):  
Jie Zheng ◽  
Yabing Zou ◽  
Ying Yang ◽  
Jianghua Shen ◽  
Yingjie Zhang

Abstract The wire breakage of a no-cleaning process PCBA occurs at the beginning of the application. Through visual inspection, cross-section, SEM & EDS, and ion chromatography analysis, it was found that the high content of ions (bromide ion) on the surface of the solder source side caused corrosion and fracture of the conductors of wave soldering surface, this article also analyzes the source of bromide ion and conclude the main factors involved in this type of failure.


2019 ◽  
Vol 82 (12) ◽  
pp. 1839-1844 ◽  
Author(s):  
Nadeem Muhammad ◽  
Lehua Lao ◽  
Azeem Intisar ◽  
Hairong Cui ◽  
Yan Zhu

2020 ◽  
Vol 32 (4) ◽  
pp. 965-969
Author(s):  
Ngo Thi To Quyen ◽  
Nguyen Thi Ngoc Quyen ◽  
Huynh Thi Kieu Linh ◽  
Thuy Trang Le Ngoc ◽  
Hoang Le Tuan Anh ◽  
...  

In present study, a steam distillation method has been adopted for extraction of the essential oil from Vietnamese lemon (Citrus aurantifolia) peel harvested from Tien Giang Province, Vietnam. Various extraction conditions influencing the oil yield were investigated. The resulting essential oil was evaluated for physico-chemical characteristics and antibacterial activities. The chemic al composition of oil was investigated by GC-MS. The results showed that with grinded lemon peel, a ratio of water and lemon peels of 3:1 (mL/g), extraction time of 90 min at 120 ºC, the highest essential oil yield was attained at 2.1 %. Bioactive components found at high content included limonene (64.90 %), γ-terpinene (13.70 %), β-pinene (11.89 %), α-pinene (2.11 %), β-cymene (1.80 %) and sabinen (1.52 %). The lemon essential oil in this study was found to inhibit five bacteria strains including Staphylococcus aureus, Bacillus cereus, Escherichia coli, Salmonella enterica and Pseudomonas aeruginosa.


2011 ◽  
Vol 42 (8) ◽  
pp. 920-931 ◽  
Author(s):  
Muhammad Akhtar ◽  
F. Hussain ◽  
T. M. Qureshi ◽  
M. Y. Ashraf ◽  
J. Akhter ◽  
...  

1971 ◽  
Vol 20 (3) ◽  
pp. 364-365 ◽  
Author(s):  
Kazuyuki HIRANO ◽  
Shunsuke KAGEHIRA ◽  
Tomoko MIZUNO ◽  
Satoshi KAWAI ◽  
Takeo OHNO

1992 ◽  
Vol 267 ◽  
Author(s):  
Alice B. Paterakis

ABSTRACTA calcareous and non-calcareous clay were fired to 900 degrees Celsius and subsequently impregnated with a solution of Na2SO4. These test samples were then impregnated with one of three consolidants: Acryloid B72, Tetraethyl Orthosilicate (TEOS), Methyl Triethoxysilane (MTS). Desalination tests using the static immersion and stirred solution methods were made to determine the effect of consolidation on the rate and extent of salt extraction. Desalination was monitored by Ionic Conductivity, Atomic Emission Spectroscopy and Ion Chromatography analysis of the extraction solutions.


2017 ◽  
Vol 726 ◽  
pp. 355-359 ◽  
Author(s):  
Ming Yu Wang ◽  
Zhong Bao Guo ◽  
Hong Yan Guan ◽  
Man Li

A method for determination of formaldehyde in water-borne coatings by high-performance liquid chromatographic was proposed. Ultrasonic water extraction method was used instead of the traditional steam distillation method can be more rapid and efficient extraction of target, filtered and derivatived with DNPH. The extract was separated by C18 column with an elution composed of acetonitrile and water, and detected at 352nm. The detection limit was 0.1mg/L. The method showed good linear correlation, R2 was 0.9997 at the range of 0.1mg/L ~ 20 mg/L. Recovery was 95% ~105%. This method is simple, effective and sensitive.


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