An electrochemical approach to quantification of volatile organic solvents dispersed in solution – towards bipolar electrode sensors

2021 ◽  
Author(s):  
Dawid Kałuża ◽  
Katarzyna Węgrzyn ◽  
Brian Kaczmarczyk ◽  
Marianna Gniadek ◽  
Krzysztof Maksymiuk ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Bipolar Electrode ◽  
Electrochemical Approach ◽  
Volatile Organic

Generic method for determination of volatile organic solvents in cosmetics

2014 ◽  
Vol 32 (11) ◽  
pp. 1251
Author(s):  
Jing DA ◽  
Xianglu HUANG ◽  
Gangli WANG ◽  
Jin CAO ◽  
Qingsheng ZHANG
Keyword(s):  
Organic Solvents ◽  
Volatile Organic

Synthesis of Red Luminescent Non Symmetric Styryl-4H-Pyran-4-Ylidene Fragment Containing Derivatives for Organic Light-Emitting Diodes

2011 ◽  
Vol 222 ◽  
pp. 271-274 ◽  
Author(s):  
Elmars Zarins ◽  
Janis Jubels ◽  
Valdis Kokars
Keyword(s):  
Organic Solvents ◽  
Spectral Properties ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Amorphous Films ◽  
Light Emitting ◽  
Organic Light ◽  
Volatile Organic ◽  
Derivatives Of

New organic glassy non symmetric styryl- derivatives of 2(2,6-substituted-4H-pyran-4-ylidene)-malononitrile, 2(2,6-substituted-4H-pyran-4-ylidene)-1H-indene-1,3(2H)-dione and 2(2,6-substituted-4H-pyran-4-ylidene)-pyrimidine-2,4,6(1H,3H,5H)-trione were synthesized. They form thin solid amorphous films from volatile organic solvents (DCM and chloroform). Their spectral properties have been studied.

Application of sensor arrays based on thin films of conducting polymers for chemical recognition of volatile organic solvents

2009 ◽  
Vol 135 (2) ◽  
pp. 541-551 ◽  
Author(s):  
A.L. Kukla ◽  
A.S. Pavluchenko ◽  
Yu.M. Shirshov ◽  
N.V. Konoshchuk ◽  
O.Yu. Posudievsky
Keyword(s):  
Thin Films ◽  
Conducting Polymers ◽  
Organic Solvents ◽  
Sensor Arrays ◽  
Chemical Recognition ◽  
Volatile Organic

Volatile organic solvents in correction fluids: Identification and potential hazards

1993 ◽  
Vol 50 (6) ◽  
Author(s):  
C.N. Ong ◽  
D. Koh ◽  
S.C. Foo ◽  
P.W. Kok ◽  
H.Y. Ong ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Volatile Organic ◽  
Fluids Identification

Age-Dependent Partition Coefficients for a Mixture of Volatile Organic Solvents in Sprague-Dawley Rats and Humans

2007 ◽  
Vol 70 (20) ◽  
pp. 1745-1751 ◽  
Author(s):  
Deirdre A. Mahle ◽  
Jeffery M. Gearhart ◽  
Claude C. Grigsby ◽  
David R. Mattie ◽  
Hugh A. Barton ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Partition Coefficients ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Volatile Organic ◽  
Age Dependent

Cellules photoélectrochimiques de phtalocyanine d'hydroxyaluminium déposées par rotation

1986 ◽  
Vol 64 (12) ◽  
pp. 2431-2439 ◽  
Author(s):  
Gérard Perrier ◽  
Lê H. Dao
Keyword(s):  
Organic Solvents ◽  
Spin Coating ◽  
Counter Electrode ◽  
Photoelectrochemical Cell ◽  
Photoelectrochemical Cells ◽  
Electrical Behavior ◽  
Cell Efficiency ◽  
Volatile Organic ◽  
Coating Method ◽  
Solid Film

The spin-coating technique was used to produce hydroxyaluminum phthalocyanine (PcAlOH) photoelectrochemical cells. The spectral and electrical behavior of NESA/PcAlOH/BQ/HQ/Pt cells is studied and comparisons are made with cells based upon sublimed PcAlOH films. Due to the weak solubility of PcAlOH in volatile organic solvents, the DMSO used in the spin-coating method seems to be trapped in the solid film, and leads to a decrease in the photoelectrochemical cell efficiency. Studies on the influence of the counter-electrode showed that a vanadium counter-electrode gave higher values of Jsc, Voc, and η than a platinum one, but corrision phenomena were observed in that case.

scholarly journals Evaluating the vapour evaporation from the surface of pure organic solvents and their mixtures

2020 ◽  
Vol 3 (1) ◽  
pp. 77 ◽  
Author(s):  
Stepan Akterian
Keyword(s):  
Organic Solvents ◽  
Isopropyl Alcohol ◽  
Edible Oils ◽  
Ventilation System ◽  
Plant Design ◽  
Cosmetic Products ◽  
Plant Materials ◽  
Volatile Organic ◽  
Alcohol Solvents ◽  
Specific Evaporation Rate

Some perfumery and cosmetic products represent mixtures and they include large parts of solvents as ethanol, water, acetone and isopropyl alcohol. Solvents as pure hexane and ethanol-water mix­tures are used in the solvent extraction of oil-bearing plant materials and herbs. The goal of this study was the emissions of volatile solvents released during above pointed productions to be evaluated. It was found that the specific evaporation rate varies from 1.2 kg/(m2.h) (for pure methoxy-propanol) to 66 kg/(m2.h) (for three-com­ponent mixture including acetone). The eva­poration rate is higher for solvents with higher vapour pressure and at a higher velocity of surrounding air. The evaporation is less intensive from pure solvents than their mixtures. The time for the eva­po­ration from a film of solvents and their mixtures was also evaluated. It varies from 10 s (for isopropyl alcohol) to 9 min (for methoxy-propanol).Practical applicationsThe evaluation of volatile solvent emissions is a mandatory step in the design of plants for manufacturing perfumery, cosmetics, deriving essential and edible oils by means of organic solvents. Most of volatile organic solvents used are highly flammable and healthy hazardous. For assuring fire safety and safety-health working conditions and environment the ventilation system must be designed on the base of this emission evaluated. The obtained results were applied for plant design of the company “Star Nails Bulgaria” Ltd. Plovdiv.

scholarly journals Neurobehavioral Effects of Organic Solvents Exposure Among Wood Furniture Makers in Ile-Ife, Osun State, Southwestern Nigeria

2019 ◽  
Vol 9 (22) ◽  
Author(s):  
Patrick Ayodeji Akinyemi ◽  
Caleb Aderemi Adegbenro ◽  
Temitope Olumuyiwa Ojo ◽  
Olanrewaju Elugbaju
Keyword(s):  
Organic Solvents ◽  
Comparison Group ◽  
Verbal Learning ◽  
Small Scale ◽  
Exposure Index ◽  
Total Volatile ◽  
Solvent Exposure ◽  
Significant Difference ◽  
Volatile Organic ◽  
Comparison Groups

Background. Furniture making industries are small scale businesses that commonly use organic solvents. There has been minimal focus on the health effects of this chemical hazard on the nervous system among furniture makers in Nigeria. Objectives. The present study aimed to assess the association between organic solvents exposure and neurobehavioral status of furniture makers, using electronic technicians as a comparison group. Methods. A comparative cross-sectional study design was employed. A sample size of 108 was calculated for each group. A semi-structured interviewer-administered questionnaire was used to obtain data on the socio-demographic variables and use of personal protective equipment (PPE). A proforma was developed to collect neurobehavioral assessment data. A checklist was used to assess the furniture makers' workshops. Air was sampled from all of the workshops in both the study and comparison groups to determine the concentration of total volatile organic compounds (TVOCs). Results. The use of PPE was poor in both the study and comparison groups, with no significant difference between them (34.4% and 37.7% respectively). Total volatile organic compound and formaldehyde (HCHO) concentrations were significantly higher at the furniture makers' workshops compared with electronic technicians (p<0.001) for both chemicals. The 8-hour time-weighted average of TVOC was also higher in the furniture makers' workshops (4.4±0.6 mg/m3) compared with the control group (0.3±0.3 mg/m3). The neurobehavioral symptoms score was significantly higher among the study group relative to the comparison group (p<0.001). There was a significant difference in the outcome of the auditory verbal learning test, total recall (p=0.005), and delayed recall (p=0.003). There was no significant association between solvent exposure index and findings from the simple reaction time test Conclusions. Poor compliance with the use of PPE among furniture makers may increase their exposure to organic solvents. There were more neurobehavioral changes in the furniture makers with a higher exposure index. Measures are needed to educate artisans about workrelated chemical hazards and ensure compliance with basic occupational safety and hygiene standards. Participant Consent. Obtained Ethics Approval. Ethics approval was obtained from the Health Research and Ethics Committee of the Institute of Public Health, Obafemi Awolowo University (IPH/OAU/12/1049). Competing Interests. The authors declare no competing financial interests.

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