After discussing on the monitoring technologies mentioned above, it still remains a technical challenge to measure arsenic accurately in a short time. Although the monitoring instruments and methods mentioned above as its individual advantages, the central goal of developing field assays that reliably and reproducibly quantify arsenic has not been achieved.
Although the technologies mentioned above are less capable of measuring organoarsenic compounds, it should still be taken into account to comprise an important fraction of the total environmental arsenic as it is also considered a toxic pollutant. However, it is less toxic than inorganic arsenic. Arsenic sulfur species should be taken into consideration as well.