Would you be so kind as to provide some detail for that assertion. What means of qualitative and/or quantitative analysis were used?
I believe it was based on the qualities that the water used in the media would leave. They know what each signature is.
When I worked in the lab, we used distilled water (ALWAYS!!!) when making the media. That was part of my job: replenish the stock of media. One would never use tap water.
So if it is true that you can trace where it was made by tracing the source of the water....then you have to say that the water used in the media was bottled somewhere in the N.E.
BVW, I have no scientific training and find BRAIN QUEST, Fourth Grade, hard, so take this for what it’s worth.
The FBI scientists have been able to distinguish between water isotopes ratios in the anthrax. Brian Williams reports that investigators have told NBC that the water used to make the spores came from the Northeastern United States. researchers have been able to establish that anthrax grown in water in the Northeastern United States is distinguishable from anthrax grown in water from the Southeast and Pacific Northwest. In one published anthrax study, researchers grew Bacillus subtilis, a harmless bacteria that resembles Bacillus anthracis, using local water from five different U.S. cities. The scientists were able to distinguish those grown in various cities. The method can be used to narrow the number of possible origins of the water based on the number of oxygen and hydrogen isotopes. Similarly, a press release announced in September 2003 that University of Maryland researchers have developed a technique to help the FBI track the origins of deadly anthrax spores by identifying the medium used to grow it. The FBI asked Maryland professor Catherine Fenselau to turn her mass spectrometry lab to the forensic task of sleuthing how bacillus spores, such as anthrax, are prepared.
Interviewer Kestenbaum said: “Ehleringer is now creating a map showing how the isotope ratios of water vary anthrax was grown, it may rule some places out.” As defined by the Census Bureau, the Northeast region of the United States covers nine states: Connecticut, Maine, Massachusetts, New Jersey, New Hampshire, New York, Pennsylvania, Rhode Island, and Vermont. A scientist explained the research in an NPR interview in 2004.
I infer from the NBC report that from the isotope ratios, authorities believe either that the anthrax was grown in one of the yellow (or perhaps light green) areas, but not one of the dark green, blue or red areas. EdLake would have to upload the map as I don’t know how to add pictures to FreeRepublic. The yellow swath includes much of the Northeastern United States — places like Syracuse, NY but also places like Ann Arbor and Minneapolis. If that is the isotope ratio range, Islamabad and Baghdad can be excluded. Pretty much all foreign locations apparently can be excluded (except for parts of Canada), along with places with comparable oxygen isotope ratios such as Central New Jersey, Maryland and Ohio. Locales with such excludable ratios include Pakistan (Lahore), Iraq (Baghdad), and Singapore. Outside of the United States, pretty much only the adjacent parts of Canada above Northeastern US (e.g., parts of Ontario and Quebec) match the yellow swath that the scientists found distinguishing. The authors of one of the key articles noted that they couldn’t distinguish between North Carolina and Ohio — the dark green. Similarly, they can’t distinguish between Central New Jersey and North Carolina (again, the dark green). The key studies in the peer reviewed literature indicate that they were funded by the Central Intelligence Agency.
Ehleringer and his colleagues published a March 2007 article titled “Stable isotope ratios of tap water in the contiguous United States” in “Water Resources Research.” The study was funded by the “federal government.” The raw data survey results have been embargoed by the federal government.” ( I believe the agency would usually be identified). In other water isotope ratio studies the funding agency was identified as the Central Intelligence Agency or whatever agency it was. (It varied). Perhaps this March 2007 study was funded by the Department of Justice/Federal Bureau of Investigation and was done specifically for the purpose of laying the scientific groundwork of a prosecution in Amerithrax. While Helen W. Kreuzer-Martin, the Maryland scientist in a study published in April 2007 titled “Stable Isotope Ratios and the Forensic Analysis of Microorganisms,” was looking at the nutrients in the culture, the Utah scientist in this study is looking at the tap water. The DOJ/FBI likely hopes to put all the data together with the more familiar reasons to suspect someone (means, motive, modus operandi and opportunity), and put on a case that to a moral certainty proves it was committed by the perp(s). Absent the scientific evidence, there is a lack of a “smoking gun.” Here, based on this new science, there apparently is thought to be a smoking petri dish
By looking at the oxygen, hydrogen and deuterium geospatial distribution, you can more precisely identify the here the water came from. For example, the deuterium map might be relied upon to eliminate an ambiguity left by the range indicated by the oxygen and hydrogen maps.