Le nitrate du Chili

Sources and behavior of perchlorate in a shallow Chalk aquifer under military (World War I) and agricultural influences

“…(Jaunat et al, 2018) 5 High levels of ClO4have also been detected in some regions outside the trench areas (e.g., Oise, Pasde-Calais; Figure 1). An agricultural source was suspected, as large quantities of Chilean nitrate was used as fertilizer in France between 1880 and 1950 (Lopez et al, 2015), especially for sugar beet and wheat cultivation (Zimmermann, 1917). Around the year 1928, the estimated amount of Chilean nitrate applied annually for wheat cultivation in France was between 150 and 400 kg⋅ha -1 and could exceed 800 kg⋅ha -1 for beet cultivation (Lopez et al, 2014).…”