Canadian water quality guidelines for tebuthiuron

Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.)

“…However, researchers detected residues of three tebuthiuron metabolites in grasses and bushes grown in soils of a semiarid region of Arizona, 11 years after herbicide application (JOHNSEN & MORTON, 1991). We found no other literature regarding experiments on the application of tebuthiuron to sugarcane plants similar to those reported by CAUX et al (1997) and JOHNSEN & MORTON (1991).…”

“…a.i. ha -1 (recommended rate) and 11.2kg ha -1 with herbicide residue concentrations of 0.074 and 0.026µg g -1 , respectively (CAUX et al, 1997). In this same experiment, the authors' found in their sugarcane bagasse, juice and syrup (11.2kg ha -1 ) contained concentrations of 0.063, 0.076 and 0.193µg g -1 , respectively.…”

New sorbents based on poly(methacrylic acid-TRIM) and poly(vinylimidazole-TRIM) for simultaneous preconcentration of herbicides in water samples with posterior determination by HPLC-DAD

“…6,7 Tebuthiuron exhibits high leaching through soils and contaminates groundwater due to its high solubility in water (2.5 g L À1 ) and low absorption coefficient (log K ow ¼ 1.79). 8 Diuron, in turn, is classied by the EPA as a likely human carcinogen, 9 and due to its low solubility in water of 42 mg L À1 and relatively low adsorption coefficient (log K ow ¼ 2.68), it presents low tendency to sorb to soils and sediments. However, considering that its hydrolysis and aqueous photolysis half-lives are relatively long, diuron can be considered both mobile and relatively persistent.…”