particulate counter Articles

This study was performed to examine the relationship between particulate matter exposure and mortality in Seoul, Korea, during the year 2001. Particulate matter data were collected using an optical particle counter (OPC) and national monitoring stations in Seoul. The size-resolved aerosol number concentrations of particles 0.325 μm in diameter and mass concentrations of PM10 ...

Sep. 1, 2008

By National Environmental Health Association (NEHA)

 Introduction The European Commission has funded a project called 'Experimental assessment of particulate measurement instrumentation'. The project was undertaken by AEA Technology in the United Kingdom. The work comprised two phases: Phase 1: Literature review to help formulate the recommendations for measuring techniques to be investigated in Phase 2. ...

Jan. 1, 1999

By NCEC (National Chemical Emergency Centre)

“Production chemicals used in subsea applications have to be produced to a high specification of cleanliness, typically to better than NAS 8 (or the equivalent SAE AS4059 specification). This is because subsea injection systems typically terminate in narrow bore control valves that are prone to blockage by even the smallest particulates. Measurement of these production chemicals is ...

Oct. 25, 2011

By Spectrex Corporation

A survey on the concentration of particulate matter in the urban atmosphere was carried out in the city of Sao Carlos, Brazil. Five sites were selected for data collection one in the city centre (high concentration of people and automotive vehicles), three in industrial areas, and one at the interface with the countryside. The particle size distribution and mass concentration, temperature, ...

Jan. 26, 2004

By Inderscience Publishers

Delamination, or the generation of glass flakes in vials used to contain parenteral drug products, continues to be a persistent problem in the pharmaceutical industry. To understand all of the factors that might contribute to delamination, a statistical design of experiments was implemented to describe this loss of chemical integrity for glass vials. Phase I of this study focused on the effects ...

May 12, 2011

By Spectrex Corporation

This special issue of the Journal of the Air & Waste Management Association contains 15 peer-reviewed scientific papers from the specialty conference Particulate Matter Supersites Program and Related Studies, which was held in February 2005 in Atlanta, GA. Other peer-reviewed papers will appear in companion issues of the Journal of Geophysical Research, Aerosol Science and Technology, and ...

Jan. 1, 2004

By Air & Waste Management Association (A&WMA)

We all can recall our mothers telling us as children to go outside and get some fresh air.  Who would have known just how important this statement was and is today?  Air pollution affects the entire planet. You can't escape it anywhere not even inside your home or office. According to the United States Environmental Protection Agency (EPA), indoor air can be up to ten times more ...

May 10, 2008

By Met One Instruments, Inc. (MOI)

The Light Duty Inter-Laboratory Correlation Exercise has conducted testing at 9 test laboratories in the EU, Korea and Japan in order to demonstrate the practicality, robustness, repeatability and reproducibility of the particle emissions measurement techniques proposed by the Particle Measurement Programme (PMP). The exercise involved testing 16 light duty vehicles including 6 diesels equipped ...

Jan. 1, 2007

The world faces difficult pollution control decisions. For every dollar spent on pollution control, there is an alternative investment in health improvement. For every dollar spent on reducing one pollutant, there is an alternative to reduce another. The most prudent course to make the best investment should include: Intelligent uncertainty Intelligent classification of options ...

Nov. 11, 2015

By The McIlvaine Company

Healthcare facilities such as hospitals and medical centers experience large numbers of sick, injured and infected people seeking treatment and a hygienic place to recover from their ailments. Hospitals are therefore more vulnerable to harboring germs and bacteria than other locations. To prevent infections from spreading out of proportion and to ensure hygienic, disinfected environments that ...

Oct. 7, 2011

By Daimer Industries Inc.

The available methods for removing pollutants from a gas stream are numerous, to say the least. A popular method, scrubbers allow users to separate gases and solids by allowing the gas to come into contact with a liquid stream. In the end, the pollutants are washed away in the effluent, and the gas exits the system to be used in later processes or to be released into the atmosphere. For many ...

Feb. 1, 2010

By Kimre, Inc.

The modern age of wastewater treatment modelling began with publication of the International Water Association (IWA) Activated Sludge Model (ASM) No.1 and has advanced significantly since. Models are schematic representations of systems that are useful for analysis to support decision-making. The most appropriate model for a particular application often incorporates only those components ...

Jan. 1, 2011

By IWA Publishing

Engineers and developers now have a choice of engine testing technologies following the recognition by the United States Federal Register of the BG3 Partial Flow Dilution sampling (PFD) technology developed by Sierra Instruments for engine particulate emissions, R&D and certification. Building on this news, the Monterey, California - based company has also extended its global footprint this ...

Jan. 1, 2012

By Sierra Instruments, Inc.

Environmental Signals 2000 is the first of a series of regular indicator reports on the European environment to come from the Agency. Published annually, these reports will provide policy makers, experts and the general public with the very latest assessments of the EU’s environment. The reports will fill the five-year gaps between the EEA’s main state of the environment reports such as ...

May 1, 2000

By European Environment Agency (EEA)

Pointers to possible future EU policy initiatives to give co-incineration facilities burning waste-derived fuels a strategic role in waste management have emerged in a study for the European Commission.1 The report suggests a policy focus on promoting source separation of municipal wastes, active discouragement of mass burn incinerators, and a levelling of the regulatory playing-field for ...

Jan. 1, 2003

By Environmental News and Data Services (ENDS)

Since the birth of the first baby from in-vitro fertilisation (IVF) in 1978, Assisted Reproductive Technology (ART) has grown in importance as techniques and success rates have continued to improve. Put simply, IVF involves mixing sperm and egg in a lab to create an embryo which is then replaced in a woman's womb to develop normally with success being measured in terms ...

Jan. 10, 2013

By Commercial Air Filtration

We all see it, the big Hepa sticker on the side so we automatically believe the vacuum must be a Hepa rated vacuum, right? - Sorry the chances are the Vacuum would never pass a Certified D.O.P test. Just because a vacuum has a Hepa filter doesn't make it a Hepa vacuum, many factors have to be taken into account such as: The Hepa Filter needs to be sized according to the airflow ...

Sep. 1, 2012

By Hypervac Technologies

PROBLEM The United States EPA promulgated a ruling in 40 CFR, imposing strict new standards to reduce emissions of toxic air pollutants from the manufacture of pharmaceutical products, including prescription and over-the-counter drugs. The agency's rule was intended to reduce emissions of a number of air toxins and hazardous air pollutants (HAPs), including methylene chloride, ...

Jan. 2, 2008

By Anguil Environmental Systems, Inc.

Historically, one of the most cost-effective indicators of machinery health has been the analysis of ferrous debris in oil. Such analysis utilizes the ferromagnetic properties of generated debris to perform the analysis. Since nearly all wear debris contains ferrous material (in particular iron), an abnormal increase in the amount of debris can be directly correlated to abnormal machinery ...

Apr. 7, 2017

By Spectro Scientific

' In order to determine the effectiveness of actions to improve environmental quality it is necessary to be able to measure relevant environmental parameters at a level of detail which is accurate enough to distinguish the anticipated changes. However, the establishment and maintenance of monitoring systems is time-consuming and expensive and therefore the scale of such systems needs to be kept ...

Jan. 1, 1997

By The World Bank