Monitoring the environment for metals has become a topic of considerable importance, not only to
those industries emitting heavy metals but also to surveillance agencies and other organizations assessing
the impact of metals on the environment. Our goal is to provide a comprehensive and easyto-
read text for anyone working in the environmental analytical chemistry arena and to provide
essential information to consultants and regulators about analytical and quality control procedures
helpful in their evaluation and decision-making procedures.
The purpose of this document is to provide hospitals and the Joint
Commission on Accreditation of Hospitals Organization (JCAHO) a
guide prepared by medical physicists recommending tests and proce-
dures for medical lasers to maintain a high level of quality care in a safe
environment. The guidance for safe use of laser systems for diagnosis
and therapy is intended for use by all health care personnel associated
with laser systems’ operation (physicians, nurses, medical physicists),
maintenance (engineers), and service (biomedical technicians).