Which of the following is a major pollutant of concern from a printed circuit board shop?

In the context of a printed circuit board shop, copper is a major pollutant of concern for several reasons. Printed circuit boards (PCBs) are primarily composed of materials that require copper for electrical conductivity. The processes involved in creating and etching PCBs often use significant amounts of copper, leading to its release into the environment through waste products and effluents.

Copper pollution can have detrimental effects on aquatic life and can lead to ecosystem imbalances. Additionally, when copper is not managed properly, it can accumulate in soil and water bodies, causing toxicity to various organisms and potentially entering the food chain. Therefore, controlling copper levels and ensuring proper waste management practices are critical in PCB manufacturing to minimize environmental impact and protect human health.

Considering its prevalence and the environmental concerns associated with it, copper stands out as a key pollutant that PCB shops must address effectively through appropriate waste treatment and recycling practices.