Welcome Guest
Sign In
Register
Articles
Product Guide
Featured Products
Product Reviews
Product Videos
News
Home
Chemistry
Clinical Diagnostics
Environmental
Food
Forensics
Life Science
Materials Science
Pharmaceutical
Home
Author Profile
David Coleman
David Coleman
David Coleman
is an applied statistician with Alcoa Technical Center in Alcoa Center, PA.
Articles by David Coleman
Statistics in Analytical Chemistry: Part 34—Detection-Limit Summary
Thursday, May 28, 2009
The subject of detection limits (DLs) is a controversial one, generating many questions and almost endless debate.
read more
Statistics in Analytical Chemistry: Part 33—Detection Limits via 3-Sigma (Concluded)
Friday, March 20, 2009
In the last installment (Part 32, American Laboratory, Nov/Dec 2008) of this series, three detection limits (DLs) were calculated (via the 3-Sigma [3s] approach, where a is set to be 0.01) for a ...
read more
Statistics in Analytical Chemistry: Part 32—Detection Limits Via 3-Sigma
Friday, December 05, 2008
As was mentioned in the first article on detection limits (DLs) (Part 26, American Laboratory, June/July 2007), many formulas exist for calculating these values.
read more
Statistics in Analytical Chemistry: Part 31—Receiver Operating Characteristic (ROC) Curves: Equations
Friday, September 26, 2008
Please do not despair! This article is not a series of formulas to be memorized.
read more
Statistics in Analytical Chemistry: Part 30—Statistically Derived Detection Limits (Concluded)
Thursday, July 10, 2008
In Part 29 (American Laboratory, Feb 2008), Hubaux-Vos detection limits (H-V DLs) were explained and an illustration was given.
read more
Statistics in Analytical Chemistry: Part 29—Statistically Derived Detection Limits (continued)
Thursday, February 28, 2008
Part 28 (American Laboratory, Nov/Dec 2007) laid the framework for discussing detection limits. The relationship among the detection limit (DL), the probability of false positives (a), and the ...
read more
Staistics in Analytical Chemistry: Part 28—Statistically Derived Detection Limits
Friday, December 28, 2007
In the previous article (Part 27, American Laboratory, Sept 2007), the world of detection was shown to revolve around three variables: 1) the detection limit, 2) the probability of false positives, a,...
read more
Statistics in Analytical Chemistry: Part 27—Receiver Operating Characteristic (ROC) Curves
Saturday, September 01, 2007
Consider the following algebraic equation: 5x + 11y + 39z = 106 Since this single expression has three unknowns, there are many possible solutions; a single exact solution cannot be found.
read more
Statistics in Analytical Chemistry: Part 26—Detection Limits: Editorial Comments and Introduction
Friday, June 01, 2007
We believe that detection limits (DLs) should go away.
read more
Statistics in Analytical Chemistry: Part 25—Calibration Summary
Thursday, February 01, 2007
In a modern chemical-analysis laboratory, virtually all of the testing equipment must be calibrated periodically.
read more
Statistics in Analytical Chemistry: Part 24—Glossary
Friday, December 01, 2006
Since the beginning of this series of articles, the central topic has been calibration and its associated uncertainty.
read more
Statistics in Analytical Chemistry: Part 23—Degrees of Freedom in the Lack-of-Fit Test
Sunday, October 01, 2006
In the previous article (Part 22, American Laboratory, June/July 2006), the details behind the lack-of-fit (LOF) test were discussed.
read more
Statistics in Analytical Chemistry: Part 22—Lack-of-Fit Details
Thursday, June 01, 2006
Because of popular demand from readers, this installment will discuss the principles and calculations that underlie the lack-of-fit (LOF) test.
read more
Statistics in Analytical Chemistry: Part 21—Recovery Curves and Internal Standards (Concluded)
Saturday, April 01, 2006
The previous two installments have discussed the issue of nonideal recovery, a problem that occurs in many analytical methods.
read more
Statistics in Analytical Chemistry: Part 20—Recovery Curves
Wednesday, February 01, 2006
In Part 19 of this series (American Laboratory Dec 2005), the use of an internal standard (IS) was discussed and an example was given.
read more
Page
<<
<
1
2
3
4
>
>>
Product Guide
Analytical Instruments
Chemical Analysis Equipment
Chromatography
Clinical Diagnostics
Environmental Test Equipment
Food Testing Equipment
Forensic Laboratory Equipment
General Laboratory Equipment
Laboratory Supplies
Lasers and Optical Components
Life Science Research
Mass Spectrometry
Materials Research
Microscopy
Petroleum Testing Equipment
Pharmaceutical Lab Equipment
Spectroscopy
Test and Measurement
more products from labcompare »
Most Recent Articles
Micromachined HPLC Columns Can Revolutionize Proteomics Workflows
Tuesday, September 26, 2023
Buyer's Guide: GC-MS for Monitoring Environmental Pollutants
Friday, September 22, 2023
Refocusing the Lens of Cancer Screening
Tuesday, September 19, 2023
Study: NGS Should Be Go-to Technology on Day Zero of the Next Pandemic
Friday, September 15, 2023
Overcoming Common Challenges in Sample Viability for Single-Cell Research
Tuesday, September 12, 2023