Navigation Links
Empa X-ray expert 'decodes' diesel soot
Date:8/6/2012

Soot particles are dangerous there is nothing new in this knowledge. But what is it that makes fine particulates dangerous? Is it only diesel soot from vehicle engines? Does the danger also come from wood-burning stoves in holiday chalets? Or even from grease-laden fryer fumes from the restaurant around the corner? For a long time, these questions have been a hard nut for science to crack. Indeed, fine soot particles were collected in filters and their chemical components were analysed. Yet the question remained: what precisely is the source of the danger? Is it the soot particles themselves that make people ill? Or is it toxic chemicals the soot carries with it like a wet sponge?

Not all smoke is created equal

The Norwegian Institute of Public Health wanted to investigate this matter and asked Empa scientist Artur Braun for support. Before joining Empa, Braun had worked at the University of Kentucky and there, in 2002, he analyzed soot particles for the first time on a synchrotron using soft X-rays. Result: diesel particles that have been "born" in the engine under high pressure and immense heat have a graphite structure this is clearly visible under X-ray light. In the case of soot particles from wood fires, which have been generated under mild atmospheric conditions, this graphite structure is absent. The functional groups are also different: diesel soot was found to contain carboxyl groups such as those occurring in formic and acetic acid molecules; in the wood smoke, Braun found hydroxyl groups as in ethanol and methanol. There is thus a fine difference between smoke and smoke.

Analyse separately, fight together

The Norwegian toxicologists then went a step further and asked Braun's colleagues at the University of North Dakota to isolate the soot particles from the adherent chemical toxic substances using solvents. Braun then analysed the components individually under X-ray light: first the "bare" soot p
'/>"/>

Contact: Dr Artur Braun
arthur.braun@empa.ch
41-587-654-850
Swiss Federal Laboratories for Materials Science and Technology (EMPA)
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Screening for breast cancer without X-rays: Lasers and sound merge in promising diagnostic technique
2. Dental X-Rays May Be Linked to Benign Brain Tumors
3. In-Person Bullying Still Bigger Problem Than Cyberbullying: Expert
4. Extreme Heat Biggest Weather Killer, Expert Warns
5. Expert Tips May Help Kids Avoid Allergens at School
6. Signs of ADHD Evident by Preschool, Expert Says
7. Experts Offer Tips to Cut Kids Screen Time During Summer
8. Whats That Symptom? Experts Warn of Self-Diagnosis Via the Web
9. Public health expert David Dausey calls BPA ban hollow victory
10. All HIV Patients Should Take Meds Early On, Experts Now Say
11. Tornadoes Dont Have to Be Deadly, Experts Say
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/12/2014)... Casinos in Australia have grown ... international and online casinos. Revenue is estimated to increase ... through 2014-15. Greater per capita gambling expenditure has assisted ... in discretionary income levels have also assisted revenue growth, ... such as casino gambling services. Revenue is estimated to ...
(Date:7/12/2014)... July 12, 2014 “After my mom’s stroke, she ... a stroke and loss the use of his left side. Eating ... a way to help people like them enjoy eating again,” said ... prototype for the PATRICIA CAROL HALL PLATE (P C H PLATE). ... a more ergonomic way to eat for individuals who suffer from ...
(Date:7/12/2014)... OH (PRWEB) July 12, 2014 Wright & ... against DePuy Orthopedics , Inc., a subsidiary of Johnson & ... he suffers chronic pain after receiving a metal-on-metal DePuy Pinnacle ... later to remove the artificial hip implant. The DePuy hip ... Court, Northern District of Texas (Case No. 3:14-cv-2427) where ...
(Date:7/12/2014)... July 12, 2014 Dubai is buzzing ... legend is heading to the UAE. The National ... will be in the UAE from 28-31 October to ... support of diabetes awareness. The event is being organized ... and event management company based in Dubai. The announcement ...
(Date:7/12/2014)... 12, 2014 Floor-grade instrument ... 4.1 out of 5. This above-average score represents ... underpinning buyer negotiation power over the three years ... Son, “during the period, surging demand for healthcare ... with new product development, have placed upward pressure ...
Breaking Medicine News(10 mins):Health News:Casinos in Australia Industry Market Research Report Now Updated by IBISWorld 2Health News:Casinos in Australia Industry Market Research Report Now Updated by IBISWorld 3Health News:Casinos in Australia Industry Market Research Report Now Updated by IBISWorld 4Health News:DePuy Pinnacle Hip Lawsuit Filed By Wright & Schulte LLC On Behalf of Ohio Man Who Required Revision Surgery Purportedly From Defective Hip Implant 2Health News:DePuy Pinnacle Hip Lawsuit Filed By Wright & Schulte LLC On Behalf of Ohio Man Who Required Revision Surgery Purportedly From Defective Hip Implant 3Health News:DePuy Pinnacle Hip Lawsuit Filed By Wright & Schulte LLC On Behalf of Ohio Man Who Required Revision Surgery Purportedly From Defective Hip Implant 4Health News:DePuy Pinnacle Hip Lawsuit Filed By Wright & Schulte LLC On Behalf of Ohio Man Who Required Revision Surgery Purportedly From Defective Hip Implant 5Health News:Los Angeles Basketball Legend Headed to Dubai 2Health News:Los Angeles Basketball Legend Headed to Dubai 3Health News:Floor-Grade Instruments Procurement Category Market Research Report from IBISWorld has Been Updated 2Health News:Floor-Grade Instruments Procurement Category Market Research Report from IBISWorld has Been Updated 3Health News:Floor-Grade Instruments Procurement Category Market Research Report from IBISWorld has Been Updated 4
... successfully respond to drugs that combat the AIDS virus can ... level enjoyed by people without HIV, a study published ... sheds light on poorly understood conditions as to why some ... immune cells, others see a slower increase in these key ...
... unwanted baby girls have been drowned in milk, burned alive in ... these days it is much easier to kill them in the ... in a new book on how a traditional preference for sons ... ,India has only 927 females for every 1,000 males ...
... a gene variant that raises a childs risk of ... attributed to inflammation of the gastrointestinal tract . ... a German study that identified the same gene variant ... is a chronic and painful condition attributed to inflammation ...
... a 58-year-old Texan, went for a swim only to ... surgeries, he is still in danger of losing a ... is fighting necrotizing fasciitis, a tissue-destroying disease caused by ... marketing consultant also is suffering from multiple organ failure ...
... than a thousand prisoners has failed to solve the ... rehabilitation programmes, said the BMA today. ,The ... Ministry of Justices introduction of emergency measures designed to ... A key element of the Government strategy was an ...
... belief that male circumcision can reduce HIV infection rates ... will be told next week . ,David ... conference to be held in Sydney from July 22-25, ... in HIV prevention. ,"We always knew that ...
Cached Medicine News:Health News:HIV Drug Combo can Boost Immune Marker in Long-term Patients: Study 2Health News:New Book Gives Gruesome Account of India Girl Killings 2Health News:New Book Gives Gruesome Account of India Girl Killings 3Health News:Gene Variants for Crohn's Disease Identified 2Health News:Gene Variants for Crohn's Disease Identified 3Health News:Texan Battles Flesh-eating Bacteria Contracted While Swimming 2Health News:Prison Healthcare Continues to Fail Despite Emergency Measures, Warns BMA 2Health News:Male Circumcision can Cut HIV Infection, Studies Show 2
(Date:7/10/2014)... DIEGO , July 10, 2014  RESMED INC. (NYSE: ... its fourth quarter and fiscal year ended June 30, 2014 ... Stock Exchange market close. A press release with ResMed,s results ... the company will host a webcast to discuss operating results ... to begin at 1:30 p.m. US Pacific Time and the ...
(Date:7/10/2014)... July 10, 2014  Decision Resources Group finds ... disease (ID) specialists are willing to prescribe Durata,s ... for use as OPAT, approximately two-thirds of the ... to their hospital inpatients. However, our findings indicate ... are initiated on OPAT following hospital discharge, and ...
(Date:1/15/2014)... DALLAS , Jan. 15, 2014 /PRNewswire-iReach/ -- ChinaMarketResearchReports.com ... to its store . (Photo: ... consumption upgrade and policy support, China,s ... the years, with total market size rising from 3.28 ...
Breaking Medicine Technology:ResMed To Announce Fourth Quarter And Fiscal Year-End 2014 Results 2Long-Acting Antibiotics Offering Once-Weekly Dosing Will See Favorable Uptake and Use as Outpatient Parenteral Antimicrobial Therapy (OPAT) 2Long-Acting Antibiotics Offering Once-Weekly Dosing Will See Favorable Uptake and Use as Outpatient Parenteral Antimicrobial Therapy (OPAT) 3Orthopedic Instrument Industry in China Markets Forecast to 2015 2Orthopedic Instrument Industry in China Markets Forecast to 2015 3
... Pharmacy Technician Certification Board (PTCB) certification ... Technician Workforce Coalition of the Triad continue to ... North Carolina,s evolving healthcare system. The ... local community colleges, was formed to address the ongoing ...
... UNION CITY, Calif., July 19, 2011 Abaxis, Inc. (NasdaqGS: ... has scheduled a conference call to discuss its financial results ... 30, 2011. The call will be at 4:15 p.m. ET ... results for the first quarter of fiscal year 2012 after ...
Cached Medicine Technology:The Pharmacy Technician Workforce Coalition of the Triad and PTCB Position Pharmacy Technicians for Employment 2The Pharmacy Technician Workforce Coalition of the Triad and PTCB Position Pharmacy Technicians for Employment 3Abaxis to Report First Quarter Fiscal Year 2012 Financial Results Thursday, July 28, 2011 2
... X-22 Series is up to 10 inches/ 25 cm ... 11 rotors, the Allegra X-22 Series is the space-saving ... Only 18 inches / 46 cm wide • 11 ... 3 different ways to Spin 1.5 mL & ...
... centrifuges offer high-volume versatility along with a ... them ideal for a wide variety of ... Four- or six-place sealed swinging bucket rotor, ... offered , Lare capacity (4 x 750 ...
... performance centrifuge designed to accommodate over 55 ... refrigerated for heat labile samples. Incorporating the ... capability with automatic quick cooling from 22 ... min, no maintenance brushless motor, low pitch ...
Inquire...
Medicine Products: