事實上(shang)(shang)，工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)一(yi)般指(zhi)氯(lv)化(hua)鈉(na)(na)(na)(na)，偶爾指(zhi)亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)，但(dan)教科書上(shang)(shang)說工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)是(shi)(shi)(shi)亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)，這是(shi)(shi)(shi)一(yi)個(ge)很(hen)大(da)(da)的(de)(de)(de)(de)誤解。事實上(shang)(shang)，從(cong)事工(gong)(gong)業(ye)(ye)的(de)(de)(de)(de)人(ren)都知道(dao)亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)比氯(lv)化(hua)鈉(na)(na)(na)(na)貴。多(duo)虧了死亡(wang)，沒有(you)(you)(you)人(ren)會故意使用(yong)(yong)(yong)亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)來制作假食(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)。亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)被(bei)稱為工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)，因(yin)(yin)為它看起來像氯(lv)化(hua)鈉(na)(na)(na)(na)。起初，工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)僅(jin)指(zhi)氯(lv)化(hua)鈉(na)(na)(na)(na)，但(dan)其純(chun)度(du)低于食(shi)(shi)用(yong)(yong)(yong)鹽(yan)(yan)(yan)(yan)(yan)。工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)有(you)(you)(you)很(hen)多(duo)用(yong)(yong)(yong)途（隨便發布一(yi)個(ge)索(suo)引不(bu)是(shi)(shi)(shi)廣告(gao)，只(zhi)是(shi)(shi)(shi)供(gong)讀(du)者參考。工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)用(yong)(yong)(yong)于鍋爐(lu)軟化(hua)水）。用(yong)(yong)(yong)于鍋爐(lu)軟化(hua)的(de)(de)(de)(de)工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)非常(chang)常(chang)見(jian)。我(wo)從(cong)制造商那(nei)里了解到(dao)，它實際上(shang)(shang)是(shi)(shi)(shi)由海鹽(yan)(yan)(yan)(yan)(yan)直接制成的(de)(de)(de)(de)。它含有(you)(you)(you)鐵(tie)離子，呈(cheng)淡黃色(se)(se)（有(you)(you)(you)些是(shi)(shi)(shi)粉紅色(se)(se)）。理論上(shang)(shang)，它不(bu)含亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)，但(dan)含有(you)(you)(you)一(yi)些氯(lv)化(hua)鈣(gai)、氯(lv)化(hua)鎂和(he)氯(lv)化(hua)鉀。由于吸濕性(xing)，它通常(chang)呈(cheng)現大(da)(da)塊(kuai)，其中大(da)(da)部分與玉米粒一(yi)樣(yang)大(da)(da)。如(ru)果(guo)(guo)純(chun)度(du)更高，它只(zhi)有(you)(you)(you)小米那(nei)么大(da)(da)。用(yong)(yong)(yong)于食(shi)(shi)品的(de)(de)(de)(de)工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)很(hen)大(da)(da)的(de)(de)(de)(de)危害(hai)不(bu)是(shi)(shi)(shi)亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鹽(yan)(yan)(yan)(yan)(yan)的(de)(de)(de)(de)危害(hai)，因(yin)(yin)為正(zheng)如(ru)剛(gang)才所說，理論上(shang)(shang)，它不(bu)含亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)。據我(wo)所知，事實上(shang)(shang)，沒有(you)(you)(you)海水可能會暴(bao)露亞(ya)(ya)(ya)(ya)(ya)硝(xiao)酸(suan)(suan)鈉(na)(na)(na)(na)。然而，由于缺乏精煉，工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)可能含有(you)(you)(you)一(yi)些重金(jin)屬和(he)穩定且易結晶的(de)(de)(de)(de)有(you)(you)(you)機(ji)物，但(dan)可能性(xing)也很(hen)小。很(hen)大(da)(da)的(de)(de)(de)(de)問(wen)題是(shi)(shi)(shi)，工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)（在(zai)古代(dai)是(shi)(shi)(shi)私鹽(yan)(yan)(yan)(yan)(yan)）進(jin)入市場(chang)將(jiang)對市場(chang)產生影響。我(wo)國(guo)幅員(yuan)遼闊，食(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)資源分布不(bu)均，如(ru)果(guo)(guo)不(bu)實行食(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)壟(long)斷，依靠市場(chang)，奸商很(hen)容易操(cao)縱市場(chang)，擾亂市場(chang)。今年(nian)，中國(guo)正(zheng)式(shi)停止(zhi)了2000多(duo)年(nian)的(de)(de)(de)(de)食(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)壟(long)斷制度(du)，但(dan)它并沒有(you)(you)(you)完全市場(chang)化(hua)。縱觀所有(you)(you)(you)主(zhu)要(yao)國(guo)家(jia)，事實上(shang)(shang)，所有(you)(you)(you)食(shi)(shi)鹽(yan)(yan)(yan)(yan)(yan)都沒有(you)(you)(you)上(shang)(shang)市，這是(shi)(shi)(shi)打擊假鹽(yan)(yan)(yan)(yan)(yan)的(de)(de)(de)(de)核心原因(yin)(yin)。另一(yi)個(ge)輔助因(yin)(yin)素是(shi)(shi)(shi)碘鹽(yan)(yan)(yan)(yan)(yan)。工(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)(yan)(yan)和(he)假鹽(yan)(yan)(yan)(yan)(yan)的(de)(de)(de)(de)生產和(he)銷(xiao)售不(bu)加(jia)碘。然而，這個(ge)問(wen)題現在(zai)非常(chang)有(you)(you)(you)爭議(yi)。低碘鹽(yan)(yan)(yan)(yan)(yan)和(he)非碘鹽(yan)(yan)(yan)(yan)(yan)正(zheng)在(zai)慢慢成為主(zhu)流。