Navigation Links
New Quartz References for Workplace Safety

Chemists at the National Institute of Standards and Technology (NIST) have developed a new set of reference materials that could contribute to significant improvements// in workplace safety through more accurate measurement of the amount of quartz dust in the air.

Crystalline silica or quartz is one of the most common minerals on Earth. When finely powdered silica gets in the air it becomes a significant health hazard. Respirable quartz is associated with the development of silicosis, lung cancer, pulmonary tuberculosis and other airway diseases. The National Institute for Occupational Safety and Health (NIOSH) has estimated that at least 1.7 million U.S. workers are exposed to respirable crystalline silica in a variety of industries and occupations, including construction, sandblasting and mining (1991 data). Other industries with significant exposure include building construction and medical and dental laboratories. To help safeguard workers, the Occupational Safety and Health Administration (OSHA) enforces strict regulatory limits on the emission of respirable crystalline silica in the work place.

Monitoring silica dust in the workplace typically is done by collecting samples over a period of hours on a special air filter and using X-ray diffraction (XRD) to determine the amount of silica present in the sample. To be effective, monitoring requires accurate measurements of micrograms of silica on the filters, which in turn requires precise calibration of the measurement system. NIOSH has identified calibration errors as a significant factor in inconsistent results from different laboratories.

To help environmental laboratories perform these demanding calibrations, NIST has developed a series of Standard Reference Materials (SRMs) with precisely measured quantities of respirable quartz deposited on typical filters. The NIST materials cover the range between 5 micrograms and 1000 micrograms of quartz per filter, the typical range encountered in the field, and can be used to validate the accuracy of lab measurements needed to meet OSHA regulations. The reduction to ash technique must be used to prepare the quartz-on-filter specimens for XRD measurements.

A related series of reference materials using cristobalite, the second-most important form of respirable crystalline silica, also is being developed. Standard Reference Materials are among the most widely distributed and used products from NIST. The agency prepares, analyzes and distributes well over a thousand different materials that are used throughout the world to check the accuracy of instruments and test procedures.

Source-Eurekalert
'"/>




Related medicine news :

1. People Turn Health Conscious at Their Workplace
2. Korea: No Discrimination against Those with AIDS/HIV in the Workplace
3. Stress At Workplace Does Not Raise Blood Pressure
4. HIV/AIDS Policy Needed at Workplace: Experts
5. Doctors Bid to End Bullying and Harassment in the Workplace
6. Workplace Pressures, Hazards Raise Risk of Job Injuries in Youths
7. Overseeing Agency Indifferent to Workplace Safety in US
8. New standards for Human Research Safety
9. Safety of soy under suspicion
10. The Safety Of Prenatal Ultrasounds Questioned
11. Report on the Safety and Effectiveness of Melatonin supplements
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading network for professional women, ... towards gender equality at their inaugural Summit in New York City in June. The ... social audience of over 3 million. To watch the Mobilize Women video, click ...
(Date:10/13/2017)... ... ... Yisrayl Hawkins, Pastor and Overseer at The House of Yahweh, has released ... understood books in the Holy Scriptures, Revelation. The Book of Revelation paints a picture ... Many have tossed it off as mere rubbish, but Yisrayl Hawkins says that is ...
(Date:10/13/2017)... ... 13, 2017 , ... Coveros, a leader in agile coaching ... contract by the Center for Medicare and Medicaid Services (CMS). The Enterprise Agile ... of Agile methodologies in a consistent and high value manner across CMS programs. ...
(Date:10/13/2017)... ... ... “America On The Brink”: the Christian history of the United States and the loss ... author, William Nowers. Captain Nowers and his wife, Millie, have six children, ten ... the Navy. Following his career as a naval aviator and carrier pilot, he ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San Francisco ... using cutting-edge Oventus O2Vent technology. As many as 18 million Americans are estimated ... in breathing. Oral appliances can offer significant relief to about 75 percent of ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)...   Divoti USA will engrave and process ... of the latest FDA requirements, which stipulates new criteria regarding medical ... need of Medical ID jewelry such as Medical ID Bracelets, can ... in terms of the new FDA requirements . ... Divoti offers this dark mark fiber laser ...
(Date:10/11/2017)... -- Hill-Rom Holdings, Inc. ("Hill-Rom") (NYSE: HRC), today provided an ... Puerto Rico , where the company ... Following a comprehensive onsite assessment, ... damage, temporary loss of power and minimal water damage ... operations have resumed, and the company expects to return ...
(Date:10/4/2017)... SEOUL, South Korea , Oct. 4, 2017 /PRNewswire/ ... launched its next-generation CPR training aide "cprCUBE" on Kickstarter. ... of chest compression during cardiac arrests with better efficiency ... patient-mannequins. It also offers real-time feedback on efficacy of ... The crowdfunding campaign has a goal to raise ...
Breaking Medicine Technology: