scholarly journals GC–MS Investigation of Volatile Organic Compounds in Cosmetics Manufactured in South India

2021 ◽  
Author(s):  
Anbalagan Sriniva ◽  
Rajagopal Mayildurai ◽  
Thiyagarajan Maruthavanan ◽  
Alagunambi Ramasubbu
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Open Market ◽  
Human Beings ◽  
Cosmetic Products ◽  
Hair Dye ◽  
Volatile Organic ◽  
The Central Nervous System

Abstract The volatile organic compounds (VOCs) in cosmetics pose a series threat to the environment and their exposure causes a variety of ailments in human beings. The present work analyses systematically the presence of VOCs in samples of cosmetic products available in open market such as, aftershave lotion, face cream, hair dye, lipsticks, perfumes, shampoos and talcum powders by GC–MS. The investigation revealed the prevalence of more than 158 hazardous volatile organic compounds (VOCs) out of 243 organic compounds in 20 samples of the cosmetic products. The detected VOCs fall into six major groups viz., alcohols, esters, ethers, carboxylic acids and amides. Among all the VOCs detected, diethyl phthalate is found to be present in majority of the samples, which could cause mild eye and skin irritations and affect the central nervous system depending on the dosage. The samples were also found to contain certain fatty acid methyl esters. The study suggests proper instructions on the labels of such products to warn the customers. Further, finding non-toxic alternatives to existing additives has also been emphasized.

scholarly journals Non-Invasive Method to Detect Infection with Mycobacterium tuberculosis Complex in Wild Boar by Measurement of Volatile Organic Compounds Obtained from Feces with an Electronic Nose System

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 584
Author(s):  
Kelvin de Jesús Beleño-Sáenz ◽  
Juan Martín Cáceres-Tarazona ◽  
Pauline Nol ◽  
Aylen Lisset Jaimes-Mogollón ◽  
Oscar Eduardo Gualdrón-Guerrero ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Wild Boar ◽  
Organic Compounds ◽  
Electronic Nose ◽  
Bovine Tuberculosis ◽  
Human Beings ◽  
Non Invasive ◽  
Testing Phase ◽  
Volatile Organic ◽  
Electronic Nose System

More effective methods to detect bovine tuberculosis, caused by Mycobacterium bovis, in wildlife, is of paramount importance for preventing disease spread to other wild animals, livestock, and human beings. In this study, we analyzed the volatile organic compounds emitted by fecal samples collected from free-ranging wild boar captured in Doñana National Park, Spain, with an electronic nose system based on organically-functionalized gold nanoparticles. The animals were separated by the age group for performing the analysis. Adult (>24 months) and sub-adult (12–24 months) animals were anesthetized before sample collection, whereas the juvenile (<12 months) animals were manually restrained while collecting the sample. Good accuracy was obtained for the adult and sub-adult classification models: 100% during the training phase and 88.9% during the testing phase for the adult animals, and 100% during both the training and testing phase for the sub-adult animals, respectively. The results obtained could be important for the further development of a non-invasive and less expensive detection method of bovine tuberculosis in wildlife populations.

Discussion on the formation mechanism of severe haze in North China and its relationship with meteorological factors

2020 ◽  
Author(s):  
Yuanyuan Meng ◽  
Jianjian Xi ◽  
Yi Wang
Keyword(s):  
Air Quality ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Formation Mechanism ◽  
Assessment Method ◽  
Climatic Conditions ◽  
Human Beings ◽  
True Solution ◽  
Volatile Organic ◽  
The Government

&lt;p&gt;In recent years, China's industrialization and urbanization have accelerated, generating high emissions of pollutants every year, which has significantly deteriorated the air quality of Chinese cities and threatened public health and the happiness of urban residents. More and more studies have shown that several megacities in China and more and more cities have experienced more severe smog pollution. The occurrence of haze seriously affects the healthy development of human beings, so the research on haze should be vigorously promoted. Although many studies have made considerable progress in the research of smog in recent years, there is no systematic and comprehensive assessment method. But scholars have not stopped the pace of research.This study takes Weinan City, Shaanxi, China as the research object, The paper describes the formation mechanism of haze and the combined effects of emission sources, chemical aerosol material formation and transformation, meteorology and climatic conditions. The mechanism of haze formation is relatively complicated. Aerosols are widely used in the research of haze composition.Organic aerosols have a very important impact on the Earth's radiation, visibility and air quality on a global scale. However, the formation of secondary pollution makes this process more complicated. Secondary organic aerosols (SOA), free radicals that form volatile organic compounds and particles with ozone (O3), hydroxyl (OH) and nitrate (NO3) and artificial volatile organic compounds (VOCs) are considered organic gases One of the most important components of sol. In the past few decades, many studies have been conducted to study the formation of SOA. However, due to the complex formation mechanism of SOA, no further reason has been clarified.The reasons for the formation of haze are more complicated. For the true solution of the haze problem is still the key for our scholars to solve in the future, the government should also formulate corresponding measures to reduce the early discharge of pollutants, control the haze from the source, in short A long way to go requires joint efforts from everyone.&lt;/p&gt;&lt;p&gt;Keywords:Haze&amp;#160; Aerosol&amp;#160; Meteorological conditions&amp;#160; Weinan&lt;/p&gt;

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