Qualitative Test of Heavy Metals in Chanos chanos (Bangus) Found in the First District of Northern Samar

The Chanos chanos is a warmwater teleost fish species that is commonly used as a food resource because of its good taste and great demand in the market. It is also known as the national fish of the Philippines. This study was conducted to determine the heavy metals found in Chanos chanos in terms of Arsenic (As), Cadmium (Cd), Chromium (Cr), and Lead (Pb). Samples were collected from San Jose, Northern Samar, Philippines. Physical properties of the sample in terms of its pH and solubility were also determined. Results showed that the Chanos chanos tested positive for the Lead heavy metal and found in the belly part of the fish. The pH level of Chanos chanos extract is acidic while it is soluble in water and methanol and insoluble to the toluene. It was noted that the presence of Lead indicates contamination of the marine resources, hence, a thorough policy on saving and mitigating these resources must be the first act of the concerned local agencies.