Table 1 Concentrations and volumes of amendement solutions injected into the ground water

1

\({(\text{NH}_{4})_{5}\text{Fe}(\text{C}_{6}\text{H}_{4}\text{O}_{7})_{2}}\)

2.5 x 10\(^{-4}\) mol L\(^{-1}\); (13 mg L\(^{-1}\) Fe(III))

1431

1412

2

\({\text{Na}_{5}\text{P}_{3}\text{O}_{10}}\)

1 x 10\(^{-4}\) mol L\(^{-1}\); (3.1 mg L\(^{-1}\) P)

1383

1304

3

\({\text{MgSO}_{4} \cdot 7 \text{H}_{20}}\)

5.2 x 10\(^{-3}\) mol L\(^{-1}\); (500 mg L\(^{-1}\) \({{\text{SO}^{2-}_{4}}}\))

1438

1625

\({\text{HNO}_{3}}\)

2.4 x 10\(^{-4}\) mol L\(^{-1}\); (3.4 mg L\(^{-1}\) N)

4

Sodium flourescein

2.5 x 10\(^{3}\) mg L\(^{-1}\)

794

−

Bone-meal hydrochar

10 \(\%\)

−

400