Issues in Assessing Environmental Exposures to Manufactured Nanomaterials

Issues in Assessing Environmental Exposures to Manufactured Nanomaterials

Manufactured nanomaterials (MNs) are commonly considered to be commercial products possessing at least one dimension in the size range of 10(-9) m to 10(-7) m. As particles in this size range represent the smaller fraction of colloidal particles characterized by dimensions of 10(-9) m to 10(-6) m, they differ from both molecular species and bulk particulate matter in the sense that they are unl...

Paradigms to assess the environmental impact of manufactured nanomaterials.

Visualize printing all 24 volumes of the Encyclopaedia Britannica on the head of a pin. In 1959, Richard Feynman articulated this reality in an insightful address at the annual meeting of the American Physical Society. In what became a prophetic speech, ‘‘There’s plenty of room at the bottom’’ [1], Feynman discussed manipulating and controlling matter on a small scale. Back then, forward thinki...

Hazard assessments of manufactured nanomaterials.

BACKGROUND It has been difficult to make reliable hazard assessments of manufactured nanomaterials, because the nanomaterials form large agglomerations in both in vitro and in vivo studies. OBJECTIVE In the New Energy and Industrial Technology Development Organization (NEDO) Project of Japan, the physicochemical properties of many manufactured nanomaterials are being measured, and in vitro an...

Preventing child exposures to environmental hazards: research and policy issues.

This monograph contains 39 papers presented at the Symposium on Preventing Child Exposures to Environmental Hazards: Research and Policy Issues held March 1994. This national invitational meeting brought together 200 researchers, clinicians, policymakers, and community advocates to develop recommendations for action for the federal government and the research community. It was the first time th...

Assessing Risk Through Environmental, Social and Governance Exposures