Volatile phenol, a toxic substance, was detected in water samples collected near the Tianjin Port for the first time, the State Oceanic Administration (SOA) said Tuesday.

Also, minute traces of sodium cyanide were detected again, but at a lower level than the previous day.

The findings were based on monitoring reports from Monday, according to the SOA.

Two explosions ripped through a warehouse storing hundreds of tons of toxic chemicals last Wednesday night. Death toll from the accident has risen to 114, with 692 people hospitalized and 57 still unaccounted for.