B部分的建立是為了提供一個季度的渠道進行深入的評論，無論是委托的還是主動的，這補充了毒理學和環境健康雜志上發表的原始研究。按照最初的范圍，B部分將側重于一般的環境毒理學，以及特別關注的領域，如：靶器官毒理學；免疫毒理學；風險評估；致癌和誘變；生態毒理學和水生毒理學；影響健康的環境因素。重點將是自然和人為環境污染物的毒理學效應及其對完整生物體和體外系統的作用。B部分：關鍵審查是毒理學家、環境學家、藥理學家、生物化學家、輻射生物學家和流行病學家，以及衛生保健專業人員、健康和安全管理人員、環境和職業醫師、腫瘤學家和有害物質專業人員不可或缺的資源。

Part B has been instituted to provide a quarterly outlet for in-depth critical reviews, both commissioned and unsolicited, which complement the original research published in the Journal of Toxicology and Environmental Health . In keeping with the original scope, Part B will focus on environmental toxicology in general as well as on special interest fields such as: target organ toxicities; immunotoxicology; risk assessment; carcinogenesis and mutagenesis; ecotoxicology and aquatic toxicology; environmental factors affecting health. Emphasis will be on the toxicological effects of natural and anthropogenic environmental pollutants and their action on both intact organisms and in vitro systems. Part B: Critical Reviews serves as an indispensable resource for toxicologists, environmentalists, pharmacologists, biochemists, radiation biologists, and epidemiologists, as well as for health care professionals, health and safety administrators, environmental and occupational physicians, oncologists, and hazardous substance professionals.