Function to convert chemical data from mg/L to meq/L

conc_to_meq(df, magnesium = "Magnesium, dissolved",
  calcium = "Calcium, dissolved", sodium = "Sodium, dissolved",
  potassium = "Potassium, dissolved", chloride = "Chloride, total",
  sulfate = "Sulfate, total", alkalinity = "Alkalinity, total (lab)")

Arguments

df

data frame in wide format i.e, column names are major ions

magnesium

magnesium

calcium

calcium

sodium

sodium

potassium

potassium

chloride

chloride

sulfate

sulfate

alkalinity

Total Alkalinity