The growing pollution by hazardous agents is a major concern due to pollutant transfer to water, air, soil and food. Since actual analytical methods are limited, there is a need for detectors that are more sensitive, more selective, faster and cheaper. For instance, advanced portable biosensors have better sensitivity compared to classical diagnostic devices. Here, we review ultrasensitive detection of pollutants by biosensors. In particular, nanobiosensors display remarkable nanomolar to picomolar detection of various pollutants including heavy metals, pesticides, endocrine disruptors, dioxin, biological oxygen demand and microbial pathogens.

由于污染物转移到水，空气，土壤和食物中，因此有害物质日益增加的污染是一个主要问题。由于实际的分析方法是有限的，因此需要更灵敏，更具选择性，更快且更便宜的检测器。例如，与传统的诊断设备相比，先进的便携式生物传感器具有更高的灵敏度。在这里，我们回顾了生物传感器对污染物的超灵敏检测。尤其是，纳米生物传感器对各种污染物（包括重金属，农药，内分泌干扰物，二恶英，生物需氧量和微生物病原体）的皮摩尔检测具有惊人的纳摩尔级。