Human skin gas profile of individuals with the people allergic to me phenomenon.

Recent studies have shown that some people claim that their skin gases provoke allergy-like reactions in people in their near vicinity. Such a phenomenon or symptom is called 'people allergic to me (PATM)'. Although numerous people suffer from PATM, the actual conditions are unknown.

Methods of Cleaning Taps to Prevent Hospital-Associated Infections: An Environmental Survey-Based Study.

In hospitals, outbreaks can occur due to pathogens accumulating in the areas around the wards' washbasins. Carbapenem-resistant Enterobacterales (CRE) was detected in an environmental survey in the high-care unit of a university hospital in Isehara, Japan, and effective cleaning methods were investigated. This study investigated methods of cleaning taps using commonly used detergents and disinfectants, and it assessed their effectiveness in removing hard scale and pathogens, including CRE.

Effect of Heating Temperature on Ammonia Emission in the Mainstream Aerosols from Heated Tobacco Products.

Heated tobacco products are devices that deliver nicotine into the body via inhalation of the mainstream aerosols generated during direct and/or indirect heating of tobacco leaf material. Ammonia in aerosols potentially increases the alkalinity and, therefore, the proportion of free nicotine for easy absorption. Meanwhile, ammonia can be a cause of adverse health effects when involved in the aerosols.

Why airborne transmission hasn't been conclusive in case of COVID-19? An atmospheric science perspective.

Airborne transmission is one of the routes for the spread of COVID-19 which is caused by inhalation of smaller droplets containing SARS-CoV-2 (i.e., either virus-laden particulate matter: PM and/or droplet nuclei) in an indoor environment.

Measurement of diallyl disulfide and allyl methyl sulfide emanating from human skin surface and influence of ingestion of grilled garlic.

Diallyl disulfide (DADS) and allyl methyl sulfide (AMS) have been known as a metabolic product of sulfur-containing foods, typically garlic. The odour of such organosulfur compounds following garlic ingestion is often considered as an unpleasant element. Although previous studies have identified the DADS and AMS associated with garlic breath, no study has been reported on the determination of both compounds emanating from human skin surface.

Photocatalytic degradation of atmospheric fine particulate matter (PM) collected on TiO supporting quartz fibre filter.

Carbonaceous constituents in fine particulate matter (PM) are often associated with adverse health effects in humans. Although air filtration technology is widely used for preventing exposure to PM, the trapped PM still has hazardous property if not treated subsequently. Thus, this study aimed to realise detoxification of PM with a photocatalytic decomposition of carbonaceous compounds in PM samples collected on a quartz fibre filter coated with titanium dioxide (TiO).

Detection of tobacco smoke emanating from human skin surface of smokers employing passive flux sampler - GCMS system.

Cigarette smoking is a significant risk factor for higher incidences of numerous adverse health consequences. Related health disorders are also found in non-smokers exposed to secondhand smoke (SHS). To investigate the influence of cigarette smoking and exposure to SHS on the composition of human skin gas, a trace biogas emanating from human skin, dermal emissions of volatile compounds were semi-quantitatively measured for volunteers who smoke a cigarette and those exposed to SHS.

Simultaneous and multi-point measurement of ammonia emanating from human skin surface for the estimation of whole body dermal emission rate.

Ammonia is one of the members of odor gases and a possible source of odor in indoor environment. However, little has been known on the actual emission rate of ammonia from the human skin surface. Then, this study aimed to estimate the whole-body dermal emission rate of ammonia by simultaneous and multi-point measurement of emission fluxes of ammonia employing a passive flux sampler - ion chromatography system.

Measurement of 2-nonenal and diacetyl emanating from human skin surface employing passive flux sampler-GCMS system.

It is commonly said elderly persons have a characteristic body odor, and, at present, two chemical compounds have been found to vary with age in male Japanese: 2-nonenal and diacetyl. To investigate dermal emission flux of the ageing odor related compounds, we have developed a non-invasive sampling device based on a concept of passive flux sampler (PFS). The sampler was placed on the skin surface to create a headspace, and the gases emanating from skin moved toward a disk-type adsorbent.

Colorimetric monitoring of formaldehyde in indoor environment using built-in camera on mobile phone.

A simple monitoring system of indoor air pollution is proposed by integrating a novel colorimetric detector of formaldehyde (HCHO) and a function of a built-in camera on mobile phone. The colorimetric detector employs a solid phase colorimetric reagent made from 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole, ZnO, KIO4 and agar, and changes colour from white to purple by exposure to HCHO gas. The degree of colour changes expressed in Red, Green and Blue model model responded to the HCHO concentration levels both in air and from building materials.

Measurement of concentrations of thioglycolic acid, dithiodiglycolic acid and ammonia in indoor air of a beauty salon.

Objectives: Among the many chemicals used in a hair salon, exposure to thioglycolic acid (TGA) used for permanent waving solutions (PWS) potentially causes adverse health effects. However, no report has been previously published on the indoor air concentrations of TGA in a beauty salon that contributes to assessment of exposure to TGA of hairdressers and their customers. This study aimed to demonstrate the present concentration levels of TGA in indoor air of a beauty salon where the PWS containing ammonium thioglycolate was actually used for perm treatments.

Simultaneous removal of formaldehyde and benzene in indoor air with a combination of sorption- and decomposition-type air filters.

Urgent measures for indoor air pollution caused by volatile organic compounds are required in urban areas of China. Considering indoor air concentration levels and hazardous properties, formaldehyde and benzene should be given priority for pollution control in China. The authors proposed the use of air-cleaning devices, including stand-alone room air cleaners and in-duct devices.

Determination of acetaldehyde and acetone emanating from human skin using a passive flux sampler--HPLC system.

The authors have developed a new passive flux sampler (PFS), which was a simple device to determine emission fluxes of potential biomarkers such as acetaldehyde and acetone emanating from the surface of the human skin. The sampler was placed on the skin surface to create a headspace. Within the space, gases emanating from skin moved toward the trapping filter (DNPH impregnated filter) by molecular diffusion and the trapped carbonyls were subsequently determined by HPLC.