Titanium

Titanium does not react with most acids, under normal conditions. It will react with hot hydrochloric acid, and it reacts with HF, forming Ti(III) complexes and hydrogen gas, H₂.

2 Ti(s) + 12 HCl(aq) 2 Ti[Cl₆]³⁻(aq) + 3 H₂(g) + 6 H⁺(aq)
2 Ti(s) + 12 HF(aq) 2 [TiF₆]³⁻(aq) + 3 H₂(g) + 6 H⁺(aq)

Titanium does not react with air under normal conditions. If brought to burn, titanium will react with both oxygen, O₂, and nitrogen, N₂.

Ti(s) + O₂(g) TiO₂(s) [white]
2 Ti(s) + N₂(g) 2 TiN(s)

Titanium does not appear to react wih alkalis, under normal conditions, even when heated.

Titanium reacts with halogens, when heated, forming the corresponding titanium(IV) halides

Ti(s) + 2 F₂(g) TiF₄(s) [white]
Ti(s) + 2 Cl₂(g) TiCl₄(s) [colourless]
Ti(s) + 2 Br₂(g) TiBr₄(s) [orange]
Ti(s) + 2 I₂(g) TiI₄(s) [dark brown]

Titanium does not reacts with water, under normal conditions. If the water is heated to steam, it will react with titanium, forming titanium(IV) oxide, TiO₂, and hydrogen, H₂

Ti(s) + 2 H₂O(g) TiO₂(s) [white] + 2 H₂(g)

Method - Inductively Coupled Plasma Method [2]. A portion of the sample is digested in a combination of acids. The digest is aspirated into an 8,000 K argon plasma where resulting light emission is quantified for 30 elements simultaneously.

Method limit of detection in water = 0.005 mg/L
Method limit of detection in soil = 1.00 mg/kg