The dilemma is that all particles, whether white or black, constitute a serious problem for human health. Every year, an estimated two million people worldwide die prematurely, owing to the effects of breathing polluted air.
问题在于无论黑色还是白色，所有颗粒物都会严重影响人类的健康。每年，全球估计有200万人由于呼吸遭到污染的空气而过早死亡。此外，富硫的白色颗粒也会造成土壤和水源的酸化。