Search This Blog

Thursday, July 28, 2011

Meth - the Dark Crystal

Although this blog has mostly focused on radiation detection, we also have quite a bit of expertise in the chemical detection field, and we support law enforcement in their mission to mitigate threats to the public from drug production and chemical accidents.
From its street cost to the health effects it causes, the drug methamphetamine (meth) is expensive – an ounce of pure meth is worth up to 10 times than of an ounce of pure gold. The real problem with meth usage is that the meth’s cost to users in consumption and health problems is dwarfed by meth’s cost to society. This cost comes in the form of increased funding to health care, law enforcement, and cleanup procedures, and was estimated at $23.4 billion dollars in 20101.

source
 The most common source of meth is small home labs – the DEA reported 11,239 meth lab seizures last year alone2 – which are often set up in motels, trailers, and rental properties. The production of meth involves a number of extremely hazardous chemicals, including:
·  Acetone
·  Ammonium Sulfate
·  Sulfuric Acid
·  Methanol
·  Mineral Spirits
·  Muriatic Acid
·  Organic Ether
·  Toluene

These chemicals are often absorbed into the walls, floor, and ceiling of a meth lab home and cause serious health problems for its residents for years to come. Take this example of a family from Tennessee that was featured in a New York Times article:
The spacious home where the newly wed Rhonda and Jason Holt began their family in 2005 was plagued by mysterious illnesses. The Holts’ three babies were ghostlike and listless, with breathing problems that called for respirators, repeated trips to the emergency room and, for the middle child, Anna, the heaviest dose of steroids a toddler can take. Ms. Holt, a nurse, developed migraines. She and her husband, a factory worker, had kidney ailments. It was not until February, more than five years after they moved in, that the couple discovered the root of their troubles: their house, across the road from a cornfield in this town some 70 miles south of Nashville, was contaminated with high levels of methamphetamine left by the previous occupant, who had been dragged from the attic by the police. The Holts’ next realization was almost as devastating: it was up to them to spend the $30,000 or more that cleanup would require.

Stories like this are in nowise uncommon; there are an estimated 1 to 1.5 million homes that are previously or currently being used to produce meth3. Although most of these homes appear no differently than other residences, many working meth labs do exhibit telltale signs, including:
 
·   Storage of large amounts of household items such as the chemicals listed above, matches, salt, Coleman fuel, plastic containers, coolers, and aluminum foil
·  Accumulation of garbage including red- or yellow-stained rags and coffee filters, latex gloves, empty cans, bottles, and plastic tubing
·  Chemical staining on walls and floors
·  Covering or blacking-out of windows
·  Security measures such as cameras or baby monitors outside of buildings or guard dogs
·  Unusual traffic patterns, such as excessive night traffic or large numbers of visitors with short stays
·  Burn pits, stained soil or dead vegetation indicating dumped chemicals or waste from a meth lab
·  Abnormal chemical odors not normally associated with apartments, houses or buildings. These odors may be similar to sweet, bitter, ammonia or solvent smells

More sophisticated equipment is often used by law enforcement to monitor meth lab activities and find areas that may be contaminated by previous meth lab use. D-tect Systems’ Chem-ID is a valuable asset in this search. The Chem-ID is a portable chemical detector that can identify over 100 different chemicals including many of those used in the production of meth. This device can identify multiple chemicals at once, and can even identify chemicals at a concentration as low as several parts-per-billion. The Chem-ID can gather samples near a suspected meth lab and analyze them on the spot, giving law enforcement valuable information about the status of the site.
The Chem-ID being operated remotely via Bluetooth

To find more information on meth, check out the Drug Enforcement Agency’s website at www.dea.gov or www.methlabhomes.com, an excellent nonprofit website with up-to-date statistics and news reports.

D-tect Systems is supplier of advanced radiation and chemical detection equipment sold around the world. www.dtectsystems.com.

Thursday, July 21, 2011

Radon: Radiation on the Home Front


It seeps up through the ground, pooling in basements and cellars. It can infiltrate our homes and even our lungs, spreading radiation with every ripple of breeze. Present in nearly every country of the world, this substance is colorless, odorless, and tasteless. It kills thousands every year and requires special equipment to locate.
Although this sounds like something from a cheesy science fiction film, radon gas is a real threat to people all over the world. Radon-related diseases cause about 21,000 deaths per year in the US1 (almost twice the number of drunk driving deaths), meaning in most countries only smoking causes more deaths from lung disease.

Deaths Per Year - Source: http://www.epa.gov/radon/pubs/citguide.html

The first reason radon is dangerous is because it’s all around us. The EPA estimates that 1 out of every 15 homes in the US has elevated radon levels2 . In almost every country radon is the largest natural source of human exposure to ionizing radiation and makes up over half the radiation each person is exposed to in a year. Since radon is a decay product of uranium, it is more often found where there are large concentrations of granite, like those occurring in Ireland and the UK, Canada, and some US states such as Iowa and Pennsylvania.  
Radon Test Kit - Source: http://visualsonline.cancer.gov
The physical properties of radon also contribute to its effect on people.  Radon is one of the most dense gases on our planet – over 8 times denser than the atmosphere at sea level. This causes it to pool at the bottom of whatever container it is in. Because of this, elevated radiation levels from radon are found in the lower levels and basements of buildings. It also means that when breathed in, radon gets trapped in the bottom of the lungs and has more potential to do damage. Radon emits mostly alpha radiation which is made up of fast-moving particles with more mass than beta or gamma radiation. Alpha radiation doesn’t penetrate very well – it can be stopped by as little as a piece of paper or human skin. So the real risk to humans from alpha radiation is when it gets inside us and starts to affect our internal organs. Because it is a gas, almost all the damage done is in the lungs and can lead to lung cancer.   
The good news about radon is that it is easily detectable and many options are available to lessen radon risks in the home. Short- and long-term radon test kits are inexpensive and commercially available throughout the world. A short-term test (which takes several days) gives the homeowner an estimate of radon concentration in the home, and a subsequent long-term test (which takes a year or more) can give a more precise measurement. There are varying ‘action levels’ of radon throughout the world, but most countries recommend taking some action to reduce radon if average concentrations are above 4 pCi per liter of air3. Solutions to lower radon concentrations include venting air from lower stories of a house or pressurizing areas to keep external gases out.
An example of radon venting from the US EPA.
Although radon may sound scary and looks pretty bad on paper, many people can significantly lower their risk of radiation exposure from radon. Good information is widely available on this subject, including the World Health Organization’s Radon Handbook and A Citizen’s Guide to Radon by the US Environmental Protection Agency.  
D-tect Systems is supplier of advanced radiation and chemical detection equipment sold around the world. www.dtectsystems.com.

Monday, July 18, 2011

Relative Doses of Radiation

As we've discussed earlier on this blog, to truly understand the health threat that radiation poses we have to put radiation in perspective. To help with this, we've just released a page that lists a number of relative doses of radiation and how they compare to the alarm levels of the MiniRad-D radiation detector. When it detects radiation, the MiniRad-D displays a number from 1 to 9 to indicate the strength of the radiation. The ranges of these numbers are listed on the graph and compared with varying radiation doses.

Because the MiniRad-D is a very sensitive device, lower levels of radiation that it picks up pose almost no health threat at all.
D-tect Systems is supplier of advanced radiation and chemical detection equipment sold around the world. www.dtectsystems.com.