EnviroMail 16 - New Phenoxy Herbicide Method Improves Sampling Efficiency and Data Quality
At ALS we know that optimizing time spent in the field is important to our clients, as is the reduction of manual handling.
Effective immediately, following our latest innovation project, instead of requiring one or even two 1 Litre sample bottles for Phenoxy Herbicides water testing (E706A), now a single 100 mL amber bottle is all that is required (the same bottle type currently being used for our new OCP and PCB method – see EnviroMail 14). Benefits include smaller and fewer sample bottles to label and fill, lower manual handling loads, reduced shipping costs, greater sampling efficiency (especially for low flow groundwater wells), plus significant quality benefits.
Our NEW accredited1 Phenoxy Herbicides method (E706A) with a 100 mL sample size is now offered by ALS Waterloo. The data quality of this method is simply exceptional.
Phenoxy Herbicide BackgroundPhenoxy herbicides have been widely used to control broad-leaf weeds in agricultural crops and grasses since the 1950s. They attack broad-leaf weeds by inducing rapid, uncontrolled growth, leaving grasses and grain crops (“monocots”) largely unharmed. Historically, phenoxy herbicides like 2,4-D, Mecoprop, and Dicamba have been commonly used for weed control of lawns in various commercial “weed and feed” products, although cosmetic applications of pesticides to lawns have now been banned in many Canadian municipalities due to environmental concerns. 2,4,5-T is a phenoxy herbicide which was once widely used in agriculture prior to being phased out in the late 1970s (banned in Canada and the US in 1985), due to trace contaminants of highly toxic dioxin (TCDD) generated in its production. Agent Orange, a defoliant used in the Vietnam War, consisted of 2,4-D and 2,4,5-T, which caused serious health consequences to Vietnamese citizens and American veterans.
What This Means For ALS Clients
Ontario Reg. 169/03, the BC Contaminated Sites Regulation (CSR), Alberta Tier 1 (ABT1), and CCME each have unique criteria for Phenoxy Herbicides. ALS Canada has developed a Routine method that meets O. Reg. 169/03 and the lowest BC CSR criteria with a 100 mL sample, sufficient for initial and duplicate analyses.
To meet the lowest ABT1 and CCME levels, our Trace method employs an additional concentration step using the same 100 mL sample bottle.