Sentence examples for precursor substances from inspiring English sources

Contamination with PFOA may have also resulted from corresponding precursor substances.

The properties of concerns only attributed to certain PFAAs or precursor substances are not addressed.

However, an authorisation does apply only for the substance itself and does not include any precursor substances.

By adjusting the hydrothermal duration and the precursor substances, a surfactant induced mechanism is proposed to understand the self-assembly process.

For an effective regulatory measure, it is mandatory to address both PFAAs and their precursor substances, considering also emissions from imported articles.

Hazardous transformation and/or degradation products from which a risk arises are not assessed in the scenarios describing the use of their precursor substances.

Immature fruits contain the precursor substance protopectin, which is converted to pectin and becomes more water-soluble as ripening proceeds.

The ABO blood group gene codes for a specific carbohydrate transferase enzyme that catalyzes the addition of specific sugars onto a precursor substance.

It has also been speculated that, in at least some species, the oil contains a substance that is a precursor of vitamin D. This precursor substance is thought to be converted to vitamin D by the action of sunlight and then absorbed through the skin.

Subsequently, it has been demonstrated that the precursor substance 8-oxogeranial is converted in a NADPH-dependent manner by a number of recombinant P5ßR enzymes.

("Precursors" are substances that can aid the production of chemical weapons, and may themselves be harmful).