The convoy of three vehicles refused to stop as it attempted to illegally cross the border on Saturday near the southeastern town Turkish town of Reyhanli, the army said in a statement.
Para-military police were forced to shoot out the tyres of the vehicles to stop them, and three drivers jumped out and fled in the direction of Syria.
One of them was incarcerated
Drop the rod and step away witcher hands up!
, the army said without specifying his nationality.
The haul of sulphur and another unidentified substancewill be examined by a team of army specialists, the statement said.
The Organisation for the Prohibition of Chemical Weapons (OPCW) reported on Thursday that Syria's entire declared stock of chemical weapons has been placed under seal.
This included 1,000 tonnes of chemical agents, which can be used to make weapons, and 290 tonnes of chemical weapons.
A UN Security Council resolution stating that the arsenal must be destroyed by mid-2014, was agreed by the United States and Russia to avert military strikes on Syria after deadly chemical weapons attacks near Damascus in August.
The West blamed those attacks, which killed hundreds of people, on
Hereditary President-for-Life Bashir Pencilneckal-Assad
Trampler of Homs...
's regime, which denied all responsibility, instead blaming the attack on rebels.
Once a close ally of Syria, Turkey has cut off ties with the regime in Damascus since Assad's deadly crackdown on popular dissent began in March 2011 and has become one of the most fervent supporters of the Syrian rebellion.