Calcium oxide (96%),
perchloric acid (85%),
nitric acid (60%), lanthanum oxide (99%),
ammonium acetate (97%), sulfanilic acid azochromotrop (SPANDS), and lanthanum alizarin complexone solution were purchased from Daejung Chemicals (Gyunggi, South Korea). Sodium hydroxide (98%), aqueous ammonia (25%), hydrochloric acid (35%), acetic acid (99.5%), and acetone (99.5%) were obtained from OCI Company Ltd.
(Seoul, South Korea).
Zirconium oxychloride (35%) and
boric acid (99.5%) were obtained from Sigma-Aldrich (Pittsburgh, PA, USA), and nitrophenol (99%) was purchased from Alfa Aesar (Heysham, UK).
Sodium acetate trihydrate (98.5%) was obtained from Samchun (Gyunggi, South Korea), and Total Ionic Strength Adjustment Buffer (TISAB) III and ion control solutions were obtained from Fisher Scientific (Pittsburgh, PA, USA). The chemicals were used as received without further purification, and all solutions used in the experiment were prepared with deionized water produced using Nex Power 1000 (Human, Seoul, South Korea). The liquid-binder aqueous additive for the pretreatment of soil samples for XRF analysis was purchased from Chemplex Industries Inc. (Palm City, FL, USA).
Oh S.Y., Kim H, & Yoon H.O. (2024). Fluorine contamination, mobility, and risks in soils at a phosphate-gypsum waste landfill: a new analytical method and comparison with previous methods. Environmental geochemistry and health, 46(5).